A notebook containing entries by more than one person including the following: "Construction Notes: Wahnapitae Bridge C.P.R., Pratt Truss (Iron), by F.M. Bowman, Wahnapitae, Nippissing, Sept. 22nd, 1888, consisting of 17 p. of plans and elevations. The t.p. is also signed "Hervey Bowman, Steelton, Pennsylvania", and contains his personal accounts and expenses for a trip taken in May-July 1891, as well as inserted notes and ephemera. This notebook also contains lists of survey crews (which included H.M., F.M. and A.M. Bowman) for areas of Northern Ontario: Township of Hess Algoma District (Summer, 1888), Townships 24 and 28, Manitoba (Aug-Sept.1890), Township of Gladman, Nippissing (Fall 1890), Township of Ware, Thunder Bay (Aug.-Sept. 1891).