One wanderbuch (journeybook) recording Jacob Hailer's journeyman as a wheelwright. A wanderbuch served as both a passport and a resume and has pages for local authorities to give approval to work and for employers to make statements about the worker's qualifications. Hailer worked in various cities across Germany including Durlach, Muhlburg, and Kehl.

Contract, signed on 27 October 1832 in Waterloo Township to build the Hailer Home on King Street in Kitchener. Signed by Jacob Hailer, Philip Salzberger (builder), and Friedrich Kummel (witness).

Letter of guardianship appointing Jacob Hailer the legal guardian of Catherine Wagner and Louis Henry Wagner. Catherine and Louis Henry were the children of Margaret Hailer Wanger and Jacob Wagner, and were left without an appointed guardian upon the death of their father Jacob Wagner in 1858.

Notebook of accounts from April 2, 1862, to February 4, 1863. Inset are small handmade booklets with untranslated German script.