The bulk of the fonds is comprised of records which reflect Leon Crestohl's role as a member of the House of Commons for Cartier from 1950 through the 1960s, including many annotated drafts of debate speeches he produced. Likewise, a number of event invitations, awards, and a travel diary of Leon Crestohl's can be found in the fonds, as well as stamps imprinted with Leon's portrait.

A number of records relating to Leon and Sophie Cresthol's son, Harvey Crestohl, can also be found in the fonds, many of which pertain to his role as International President for B'nai B'rith International. These include certificates and awards, photographs, correspondence, and articles regarding his involvement in the Town of Mount Royal Liberal campaign.

Finally, a number of photographs of the Crestohl family can be found in the fonds, including events surrounding Tau Epsilon, the McGill University fraternity that both father and son attended. Several New Years cards and biblical commentaries of Leon's father, Haim Crestohl, are also included in the fonds.