Series VIII. Reference material
Kimball compiled an extensive collection of reference material, most of which focuses on architecture. Subseries designations reflect the different ways he approached the subject and arranged his material. While the "card file" and "postcard collections" subseries are defined by document type, most of the remaining subseries refer to approaches in the study of architecture, namely by architectural style, building type and geographic trends. The "Other structures" and "World's fairs" subseries also have an architectural focus. "Furniture and art objects," "People" and "Subjects" include information on the fine and decorative arts as well as American history. In addition to the index cards and postcards, material consists primarily of photographs and clippings. Glass plate negatives, lantern slides, notes and photostats of floor plans and other drawings are also included.Arrangement
This series combines material previously processed as three document-type series: architectural photographs; architectural clippings and manufacturers catalogues; and card files. Postcards were transferred from the "European trips" materials. Note that the architectural products vendor catalogues were given to the Athenaeum of Philadelphia in 2003. The two subseries identified by type of material precede those identified by subject. The latter set of subseries are arranged alphabetically, except for "Other structures," which follows "Building types" because of its related subject matter.