Series consists of studies and reports prepared by or for the MLA and university student theses about issues of interest to the association. Subjects of the reports and theses include: planning, the environmental impacts of planning and development, property taxation, the financing of education in Ontario, and the historical geography of resorts in Muskoka. Series also includes some correspondence, the official plan for the District Municipality of Muskoka, and amendments to the plan.

Series consists of publications of the Muskoka Lakes Association, including the Association handbook, newsletters, and the yearbook.

Series consists of the Muskoka Lakes Association yearbook for the years 1993 to 2006, and an association handbook from 1988.

Series consists of material created and accumulated by William F. Clark in his role as president of the MLA from 1988-1990.

Includes material related to the various committees of the association, meetings of the board of directors, and issues of importance in the Muskoka region. Includes photocopied documents: correspondence, memoranda, reports, newspaper clippings, typed notes, lists of members and terms of reference for committees, official plan amendments and by-laws, financial reports, meeting agendas and minutes, an application for the incorporation of the association, and other material.

Series consists of two files of correspondence created and accumulated by Phyllis (Mrs. Rex) Parker during her term as president of the MLA from 1977-1978. Includes incoming and outgoing correspondence, including some carbon copies and draft correspondence. Series is not comprehensive.

Series consists of the working files of Michael Vaughan containing material created, accumulated and used by Vaughan during his involvement with the MLA from 1969 to 1986. Records relate mainly to his role as member (1969-1975), vice-chair (1975-1977), chair (1977-1982), and past chair (1982-1984) of the Committee on Land Use, Taxation, and Highways; and as vice-president (1982-1984) and president (1984-1986) of the association.

Series also includes records relating to various other committees, issues, and events. The Committee on Land Use, Taxation, and Highways was responsible for examining and responding to town planning, development, and other land use issues in the Muskoka region. One of the developments of major concern during Vaughan's tenure as chair was a proposed resort at the Roseneath property on Beaumaris Island, and several files in this series relate to this issue.

Series includes correspondence, memoranda, reports, studies, presentations, meeting agendas and minutes, handwritten and typed notes, newspaper clippings, newsletters, agreements, maps and plans, and other material.

Series consists of material created and accumulated by Robert Topp in his role as Chair of the Political Portfolio and its Taxation Committee (1994-1995) and member of the Political Portfolio and Chair of its Taxation Committee (1995-1996).

The Political Portfolio was involved in political and tax-related issues, and during this period was especially focused on property taxation and a group appeal of the 1992 property assessment to the Assessment Review Board launched in 1995 on behalf of over 1000 MLA members with property on Lakes Muskoka, Rosseau, and Joseph.

The appeal resulted in a decision favourable for the association that was then appealed by the Assessment Commissioner to the Ontario Municipal Board, where the association was partly successful and was granted leave to appeal to the Ontario Divisional Court.

Series includes correspondence (some drafts), reports, presentations, newspaper clippings (some photocopied), ARB and OMB notices and decisions, lists of members of the group appeal, handwritten notes, news releases, and other material.

Series consits of photographs, snapshots, negatives, contact sheets, and slides relating to the activitites of the Muskoka Lakes Association.

Series consists of newspaper clippings collected by Michael Vaughan during his involvement with the MLA as a member and then chair of the Committee on Land Use, Taxation, and Highways (1969-1982); and then as vice-president (1982-1984) and president (1984-1986) of the association.

Clippings relate to the activities of and issues of interest to the MLA. Includes clippings from newspapers in the Muskoka region and some clippings from Toronto or national newspapers. Some clippings are photocopies, and some include memoranda or annotations for or by Vaughan.

Series consists of records primarily to the production of the MLA yearbook, as well as the Association's centennial, including correspondence, clippings, draft articles, reports, advertising material, certificates, invoices, photographs, etc. Series also includes some Secretary-Treasurer and President's correspondence (1939-1956).

Series consists of documents of a legal and incorporative nature essential to the operation of the Muskoka Lakes Association as a legal entity. Includes the Association's constitution, letters patent, by-laws, and correspondence.

Series consists of financial statements and accounting journals.

Series consists of ephemera relating to activities and events organized by the Muskoka Lakes Association.

Series consists of material created and accumulated by Peter Hand in his role as Chair of the Environmental Portfolio from 1997-1999 and co-chair in 2000-2001. The Environmental Portfolio was responsible for addressing issues of water quality, forest, land use, waste management and wildlife; during this period, much of the focus was on land use, especially resort development on the Muskoka lakes.

The series contains material relating to MLA responses, sometimes in partnership with other local associations, to proposed developments at the Lake Joseph Club, the Lake Rosseau Beach Resort, the Muskoka Sands Resort, and other locations. Responses include submissions to the Township of Muskoka Lakes and the District Municipality of Muskoka relating to re-zoning applications and amendments to site plans, as well as appeals to the Ontario Municipal Board.

Series includes correspondence and memoranda, reports, notices, handwritten and typed notes, photocopied newspaper clippings, meeting minutes and agendas, draft amendments and by-laws, photocopied plans and maps, and other material. Most material is faxed or photocopied.

Series consists of records relating to the work of several MLA committees. Most records relate to the Regatta Committee and the planning, organization, and results of the annual sailing and aquatic regattas (1930-1932, 1965-1986). Series also includes one file each for the Antique Boat Committee (1978), the Election Committee (1979-1989), and the Recreational Safety Committee 1985-1986).

Includes correspondence, memoranda, meeting minutes and agendas, handwritten and typed notes, reports, budgets, invoices, regatta results charts, regatta flyers and programs, newspaper clippings, and other material.

Series consists of material relating to the 100th anniversary of the MLA in 1994 and the centennial celebrations held during that year. Includes commemorative books produced by the association, ephemera, correspondence, photocopied material on the history of the association, and other material.

Series consists of artifacts, primarily relating to the Muskoka Lakes Association's annual regattas. Includes medallions, ribbons, flags, signs, plaques, t-shirts, and sweatshirts.

Series consists of records relating to the administration and activities of the Muskoka Lakes Association, and in particular the annual meetings, meetings of the executive committee, and meetings of association directors. The records demonstrate the concern for and activity surrounding the MLA's involvement in issues affecting the environment and the quality of life in the Muskokas and address such topics as water quality, acid rain, planning and land use, water levels, taxation, etc. Series includes minutes for the annual meeting of the MLA (1894-1947), meetings of the executive committee (1972-1980), and meetings of association directors (1980-1986), as well as attachments and supporting documents including agendas, financial statements, budgets, association newsletters, correspondence, lists of board members, reports, surveys and questionnaires, minutes of board sub-committees, ephemera, photocopied clippings, etc.

Series consists of material created and accumulated in the course of the administration and operation of the MLA office in Port Carling and the role of the office in supporting the work of the association executive and committee members. Some of the files were created and maintained by Kathy Aitken, Executive Director from 1997 to 1999, and other files were possibly created and maintained by Cheryl Hallows, bookkeeper from 1996 to 1999 and Executive Assistant from 1999 to [200-], and Cheryl Watt, office assistant from 1999.

Material relates to property assessment and taxation and the group appeal to the Assessment Review Board launched by the MLA, the activities of the Political Portfolio and Safety Portfolio, as well as various other issues and events including crime and policing, safe boating, municipal elections, the antique boat show and an annual general meeting.

Includes correspondence and memoranda (some drafts), photocopied newspaper clippings, reports and presentations, lists of MLA members and roll numbers, meeting agendas and minutes, typed and handwritten notes, financial statements for 1988 and 1989, posters, photographs, a handbook, and other material.