This collection, donated to the University of Waterloo in 1988 by the family of the late Rosa Breithaupt Hewetson Clark and Spencer Clark, includes family papers from three families, the Breithaupt family, the Hewetson family, and the Clark family; records from the Guild of All Arts in Scarborough, Ontario, founded by Rosa Breithaupt Hewetson Clark and Spencer Clark; and several smaller collections acquired by the Breithaupt family and by Spencer Clark. The personal library of Spencer Clark, which includes many books, periodicals, government documents, and ephemeral items, was donated together with the archival collections, and is particularly strong in the fields of urban planning, architecture, and Canadian art.

Materials include family papers from three families, the Breithaupt family, the Hewetson family, and the Clark family; records from the Guild of All Arts in Scarborough, Ontario, founded by Rosa Breithaupt Hewetson Clark and Spencer Clark; and several smaller collections acquired by the Breithaupt family and by Spencer Clark. The personal library of Spencer Clark, which includes many books, periodicals, government documents, and ephemeral items, was donated together with the archival collections, and is particularly strong in the fields of urban planning, architecture, and Canadian art.

Materials related to the Breithaupt family, specifically the family branch Breithaupt Anthes, started by John Christian Breithaupt and Carrie Breithaupt. Includes photographs of the family in different locations and participating in various social activities, the family home in Kitchener and their vacation home in Penetanguishene, studio photographs of several members of the family, trips and travels in Canada and Europe, and photographs of later members of the family in different locations. Some of the photographs appear to be from later descendants of John Christian Breithaupt and Carrie Breithaupt.

Also contains textual records related to the political campaign led by Louis Jacob Breithaupt (John Christian Breithaupt's brother) and a metal printing plaque for the wedding of Helen Esther Breithaupt (daughter of John Christian Breithaupt and Carrie Breithaupt).

Photograph of five adults and two children by a wooden bridge taken in Penetanguishene on the way to Tiny Beach (Ontario). Three adults are standing on the bridge, and two adults with two children are closer to the edge of the water.

People in photograph are: Carrie Breithaupt is standing at front left and looking at the camera, John Edward Breithaupt is possibly the child seated on the right, John Christian Breithaupt is standing at right and Lydia Anthes is seated at right on wooden railing.

Photograph of the front of a three-story house at 172 Margaret Avenue. An adult, likely Carrie Breithaupt is seen sitting on the porch, at far right, and a child is standing at the top of the front stairs. There are trees and plants in the background and foreground and other houses are visible in the distance at left.

Studio portrait of three adults seen looking at camera.

People in photograph are: Carrie Breithaupt at left, and Carrie Augustine at right.

Studio portrait of Philip Ludwig Breithaupt, seen looking off-camera.

Studio portrait of Louise Catharine Breithaupt Geil as a baby, seen looking at camera.

Studio portrait of four children seen looking at camera.

People in photograph are: John Edward Breithaupt second from right.

Studio portrait of four children seen looking at camera.

People in photograph are: John Edward Breithaupt second from right.

Studio portrait of eight children seen looking at camera.

Studio portrait of Martha Melvina Anthes Rieder, seen looking off-camera.

Studio portrait of Ella Elmina Anthes Cook, seen looking off-camera.

Photograph of a school group of 37 children by a building entrance, possibly Margaret Avenue School.

According to annotations, one of the persons in photograph is possibly Helena Esther Duffield.

Photograph of a school group of 42 children and an adult by the entrance of Margaret Avenue School.

According to annotations, one of the persons in photograph is Frieda Caroline Harris, and the class was Class Senior 3D with teacher Teacher J.F. Carmichael.

Photograph of two children, one seated and one standing, on a house porch with trees and vegetation in the background, taken at 172 Margaret Avenue. The child that is sitting down has a basket with flowers in her left hand.

According to annotations, children are Grace M. Augustine and Louise Catherine Geil.

Postcard featuring a photograph of a group of nine adults and six children in or around a car.

People in photograph are: Lydia Louisa Breithaupt third from the left and Carrie Breithaupt sixth from the left.

Postcard featuring a photograph of a car by a building.

Postcard featuring a photograph of a group of seventeen adults and twelve children in a field with pic-nic baskets and blankets.

Postcard featuring a photograph of a woman on a dock, posing as about to jump to the water.

Postcard featuring a photograph of a group of eight adults and eleven children on a rocky area with vegetation in the background.

People in photograph are: Carrie Breithaupt seated second from the right, Ella Elmina Cook seated fourth from right, Laurine Catherine Augustine seated fourth from left.

Postcard featuring a photograph of a group of seven adults by or on a bench with a building and another group of people by a car in the background, taken in Wilmington, Delaware (U.S.).

People in photograph are: Carrie Breithaupt seated at the far right.

Two copies of a postcard featuring a photograph of a group of five children on a cart with vegetation in the background.

According to annotations, people in photograph are: Carl Louis Breithaupt, Walter Hailer Breithaupt, Maria Martha Louise Martin, Frieda Breithaupt, and Helena Esther Breithaupt.

Three copies of a photograph of a group of five adults and nine children on a house porch.

According to annotations, photograph was taken before John Christian Breithaupt and John Edward Breithaupt went on a trip to South America.

People in photograph are (left to right): John Edward Breithaupt, Lydia Louisa Breithaupt, [Carl?] Breithaupt, Louise Breithaupt, ?, Frieda Breithaupt.

Seated middle: ?, [Esther?] Breithaupt, Caroline (Carrie) Catharine Anthes Breithaupt, [John Christian?] Breithaupt.

Front row: ?, ?, ?, ?

Postcard featuring a photograph of a woman in a white dress with vegetation in the background.

Postcard featuring a photograph of a group of three adults and three children standing on a dock with catch. There is vegetation and boats in the background.

People in photograph are: John Edward Breithaupt second from right.

Photograph of a group of four children and one adult sitting down in the garden by the porch of a house, taken at 172 Margaret Avenue (Kitchener) in 1896.

According to annotations, people in the photograph are Lillian Breithaupt (with Louise Catherine Geil on her lap), Laurine Catherine Augustine, Rosa Melvina Breithaupt Hewetson Clark, and John Edward Breithaupt.

Postcard featuring a photograph of a group of nine adults and nine children standing or sitting down near a lake, some are looking at the camera some are reading or talking. There is vegetation and a dock in the background.

People in photograph are: Laurine Catherine Augustine is standing second from left, Lydia Louisa Breithaupt is standing fourth from left, and Louise Catherine Geil is seated in back row, third from right.

Three copies of a postcard featuring a photograph of a house behind vegetation by a lake with a canoe approaching with one child paddling, and one talking to other two children standing by the water, possibly taken at the family "Bay View Cottage" in Penetanguishene (Ontario).

Two copies of a postcard featuring a photograph of a house by a dock with two adults and three children posing for the photograph on the dock, four adults and one child on the dock, and six children walking down the stairs or dock, taken at Felsheim (also known as Woods Bay), John Christian Breithaupt's summer home in Georgian Bay.

People in photograph are: possibly Laurine Catherine Augustine standing top of stairs standing second from left.

Postcard featuring a photograph of a group of two adults and three children on a sailing boat, the adults and one child have their legs in the water. There is one adult standing on a dock with buildings in the background.

Postcard featuring a photograph of a group of six adults and one child on a dock holding a fishing catch and fishing rod. There is a house and vegetation in the background, taken at Felsheim (also known as Woods Bay), John Christian Breithaupt's summer home in Georgian Bay.

People in photograph are: Lydia Louisa Breithaupt, possibly Irene Anthes Locke, Ella Elmina Cook, Carrie Breithaupt, and possibly Talmon Henry Rieder.

Postcard featuring a photograph of a group of two adults and one child by or on a boat in a lake. There are buildings and vegetation in the background, possibly Felsheim (also known as Woods Bay), John Christian Breithaupt's summer home in Georgian Bay.

People in photograph are: possibly John Christian Breithaupt at right.

Postcard featuring a photograph of a lakeshore with two people in a canoe and a house behind vegetation, possibly taken at the family "Bay View Cottage" in Penetanguishene (Ontario).

Postcard featuring a photograph of two adults sitting down on a tree branch, taken in Berlin (today Kitchener), Ontario.

People in photograph are: H. Milton Cook.

Postcard featuring a photograph of a group of fifteen adults sitting down or standing dressed as a rugby team by the entrance of a building. The person in the middle of the group is holding a rugby football with the text "N. W. C. R. 1916."

Two copies of postcard featuring a photograph of one adult and two children sitting with their back to the camera and looking at the view of a lake with buildings, possibly Felsheim (also known as Woods Bay), John Christian Breithaupt's summer home in Georgian Bay.

Photograph of the front of a three-story house, possibly the house at 172 Margaret Avenue. There are trees and plants in the background and foreground and other houses in the background.

Postcard featuring a photograph of a bird view of a bulding on an island in a lake. According to annotations, building is the Anthes Cottage on Munnohannit Island, Sans Souci Island (The Archipelago, Georgian Bay, Ontario).

Christmas card for the year 1945 showing a photograph of three children sitting down on a bench with a building and vegetation in the background.

According to annotations, children in photograph may be Carl Louis and Alice (Kranz) Breithaupt's children in 1945.

Portrait of a woman seen looking to camera.

Photograph of falls, possibly Moon river falls in Ontario.

Photograph of an unidentified house in a snowy setting.

Photograph of two children tying ice skates by the entrance of a house.

Photograph of a house by a lake with a dock and canoes and vegetation around, taken from a distance. There is one person standing on the house porch, and one person sitting down on the dock, taken at Felsheim (also known as Woods Bay), John Christian Breithaupt's summer home in Georgian Bay.

Photograph of a person water skiing with three persons looking at the skier from the boat and showing their back to the camera.

Photograph of two soldiers smoking leaning against a tank.

Photograph of a person looking at the camera while repairing the right front wheel of a car.

Two copies of a photograph of five-month-old Louise Catherine Breithaupt lying on a pram in the room of a residential home.

Photograph of four adults seating down on the steps of a house. One of the persons is sitting on top of another who is not visible to the camera.

Photograph two horse-drawn sleighs by a building with a person standing on the building porch.

Photograph of a group of four children in swimsuits in a lake.

Photograph of a group of three adults by river falls, possibly Moon river falls in Ontario.

Photograph of two women posing for the photograph and looking on a residential street.

Photograph of a woman posing for the photograph on a residential street.

Photograph of two adults moving a jumping rope on a rocky surface.

Photograph of a group of five adults on a boat on a lake with vegetation in the background.

Photograph of a group of five adults seating down on the steps of a house entrance.

Photograph of a group of nine teenagers sitting down or standing dressed as a basketball team inside a building. The person in the middle of the group is holding a basketball with the number "16."

Photograph of a group of nine adults and three children sitting down and standing on a house porch, possibly taken at the family "Bay View Cottage" in Penetanguishene (Ontario).

According to annotations, people on photograph are Lydia Anthes, John Anthes, John Christian Breithaupt, Carrie Breithaupt, Catherine Hailer Breithaupt, Frances Marian Bean, Ella Elmina Cook, Martha Melvina Rieder, Adeline Staebler, Albert Liborius Breithaupt and John Edward Breithaupt.

Photograph of a group of nineteen teenagers sitting down or standing dressed as a rugby team by the entrance of a building. The person in the middle of the group is holding a rugby football.

Photograph of a group of fourteen adults and four children and a dog standing on a dock by a ship. Some of the people seem to be part of a travel group, others part of the ship staff, taken when the group was departing from Penetanguishene, (Ontario).

Photograph of a group of four adults and two children standing on the steps by the entrance of a house and by a car with an adult and a child sitting inside. House is number 166 on an unidentified street.

People in photograph are: Lydia Louisa Breithaupt standing in the centre, top of steps.

Photograph of two adults on a canoe fishing holding a fish in a fishing rod. There is vegetation in the background.

Photograph of three children in a greenhouse surrounded by plants and flowers.

Photograph of a logging scene with logs floating in water with a boat by a shore. There is vegetation in the foreground and background and buildings in the foreground.

Photograph of a group of five adults and two children by a horse cart with two horses on a beach with logs. Some of the people are eating and not looking at camera.

Photograph of a woman on a horse by a building.

According to annotations, woman is Lydia Louisa Breithaupt.

Photograph of two children sitting down or standing on a house porch surrounded by plants and vegetation.

People in photograph are: Louise Catherine Geil sitting down on the right and John Edward Breithaupt standing on the left.

Photograph of two children sitting down or standing on a house porch surrounded by plants and vegetation.

People in photograph are: John Edward Breithaupt sitting down on the right and Louise Catherine Geil standing on the left.

Photograph of an adult holding a baby and two children standing in a greenhouse surrounded by plants and flowers, possibly taken at the Breithaupt family home in Kitchener (Ontario). Carrie Breithaupt is standing at left, holding Carl Louis Breithaupt, and John Edward Breithaupt and Louise Catherine Geil are standing at right.

Photograph of factory buildings, possibly the Breithaupt Tannery in Penetanguishene (Ontario).

Photograph of a lakeshore view with a boathouse and a dock with boats by the shores and vegetation on the shore.

Photograph of a group of nine adults and one child sitting down or standing on a moving boat with a fishing catch hanging from a rail.

Photograph of two children looking off-camera and standing by a baby in a crib.

Five copies of a photograph of a baby in a crib, baby is Helena Esther Breithaupt Duffield, born on September 23, 1908, in Berlin (today Kitchener).

Studio photograph of a woman looking at camera. Photograph is located in the interior of a folder.

Two copies of a studio photograph of a child looking at camera. Photographs are located in the interior of a folder.

According to annotations, child is Helena Esther Duffield.

Four copies of a studio photograph of a child looking at camera. All photographs but one are located in the interior of a folder.

According to annotations, child is Helena Esther Duffield.

Studio photograph of a child looking at camera.

Child in photograph is possibly Helen Elizabeth Henderson.

Studio photograph of a woman looking at camera. Photograph is located in the interior of a folder.

Photograph of an unidentified group of four adults (two of them sitting down, two standing) in a room with plants in the background and a window behind them. One of the seated adults is knitting.

Studio photograph of a woman looking off-camera. Photograph is located in the interior of a folder.

According to annotations, woman is Louise Catherine Geil.

Studio photograph of a child looking off-camera. Photograph is located in the interior of a folder.

Studio photograph of a woman looking off-camera. Photograph is located in the interior of a folder.

Studio photograph of a soldier looking at camera. Photograph is located in the interior of a folder.

Studio photograph of a woman looking off-camera. Photograph is located in the interior of a folder.

Studio photograph of a woman looking at camera. Photograph is located in the interior of a folder.

Studio photograph of a woman looking off-camera. Photograph is located in the interior of a folder.

Two copies of a studio photograph of a child looking at camera. Photograph is located in the interior of a folder.

Studio photograph of a child looking off-camera. Photograph is located in the interior of a folder.

Studio photograph of a man looking off-camera. Photograph is located in the interior of a folder.

Photograph of a group of fifteen adults and seven children on the porch and stairs of a house with a horse and a cart, taken at the Ouse Club (near the Grand River).

According to annotations, and some people in photograph are uncle Fritz Goetze, aunty Goetze, Louis Buhler, aunty Bean. Horse is named Lucy. Also in photograph are: John Edward Breithaupt in a cap seated on the stairs and looking at the camera, child behind him with white lace bonnet is likely Laurine Catherine Augustine, child behind her in the same lace bonnet is likely Grace Melvina Augustine, Carrie Breithaupt is seated on the porch at centre of group and looking at an infant on her lap. Other adults are possibly Albert Benjamin Augustine and Carrie Augustine.

Two copies of a studio photograph of a child looking off-camera. Photograph is located in the interior of a folder.

Studio photograph of a couple in their wedding clothes. Photograph is located in the interior of a folder.

Studio photograph of a woman looking off-camera. Photograph is located in the interior of a folder.

Studio photograph of a group of three adults and a child, one of the adults is seating down and the rest of the group is standing around him.

Studio photograph of a soldier looking off-camera. Photograph is located in the interior of a folder.

Studio photograph of Carrie Breithaupt looking at camera.

Studio photograph of a group of eleven adults or teenagers and six children seating down or standing inside of a house with paintings and other decorations on the walls. Photograph is located in the interior of a folder.

People in the photograph are: Carrie Breithaupt.