Series consists of material accumulated by Ivan W. Keffer relating to his career at the F.W. Woolworth Co. after his appointment to executive vice-president. Material relates to the performance of the company, the German company, and Keffer's work and personal interests in Germany. A small amount of material relates to his actual role as executive vice-president in North America. Series includes correspondence (from colleagues; some may also be personal), reports, legal documents, clippings, a speech, meeting minutes, photographs, and other material.

Series consists of material created and accumulated by Ivan W. Keffer relating primarily to his personal life. Includes includes diaries, correspondence, notices and certificates, a passport and other personal/identification documents, clippings, ephemera, photographs, a scrapbook, and other material. The diaries, relating to Keffer's career as well as his personal life, cover the period during which he and his family lived in Germany and include entries that illustrate the escalation of political tensions and economic difficulties in Germany leading up to World War II and their impact on business in the country. Other material of note includes certificates and notices from the National Air Protection League (Reichsluftschutzbund).

Series consists of material created and accumulated by Mary L. Keffer. Includes correspondence, a diary, a passport belonging to her daughter (Mary Jane Keffer), and a certificate.

Series consists of photographs, most of which depict Ivan W. Keffer and his family. Includes mainly snapshots of Ivan, Mary and Mary Jane Keffer taken while they were living in Germany, during their outings and travels. Series also includes a portrait of Ivan W. Keffer at his desk and several photographs relating to the F.W. Woolworth Co.

Series consists of souvenir material probably accumulated by Ivan W. Keffer, most of which was likely collected during the time they lived in Germany. Includes mainly souvenir postcards in booklet form and loose postcards. Most postcards depict European cities and attractions; some are souvenirs from places in Canada and the United States. Series also includes souvenir material from the Keffer's voyage on the S.S. Leviathan when they moved to Germany.