The collection is arranged first by subject and then either chronologically or alphabetically. Boxes 1-6 contain Kessler's work done in St. Louis, Missouri. Box 1 contains World's Fair files; boxes 2-3 contain Forest Park restoration files; and boxes 4-6 contain project files including City Plan Commission and St. Louis & San Francisco Railroad correspondence. (The City Plan Commission was an organization of local businessmen and city officials brought together by the City Beautiful Movement. The commission was divided into four committees: Streets and Transportation; Parks, Boulevards, and Playgrounds; Architecture, Engineering, and Sanitation; and Industrial Development.) Boxes 1-2 are arranged chronologically; box 3 is organized by subject (bridges, pavilion, Jefferson Memorial, etc.). Boxes 4-6 are arranged alphabetically. Boxes 7-14 contain Kessler's work in Kansas City. Boxes 7-9 contain Kansas City Board of Park Commissioners correspondence arranged chronologically; box 9 includes Kansas City City Plan Commission correspondence. Boxes 10-12 contain projects Kessler completed as a member of the board (Parkways, Parks, Boulevards, Plazas, etc.); box 12 contains Swope Park correspondence. Boxes 10-12 are arranged alphabetically by subject. Boxes 13-14 contain Kessler's work in Kansas City as an independent contractor (arranged alphabetically). Boxes 15-17 contain Kessler's projects in Missouri, other than St. Louis and Kansas City. These are arranged alphabetically by location (city or county) and then by subject. These files include Kessler's work in Excelsior Springs, Longview Farm in Lee's Summit, Roaring River, and the University of Missouri. Boxes 18-21 contain Kessler's U.S. projects as well as foreign projects. These files are arranged alphabetically by location and then by subject. This correspondence includes work done in Indiana, Ohio, New York, Texas, and Colorado. Boxes 22-27 contain correspondence with friends, associates, colleagues, businesses, and social and charitable organizations. These files are arranged alphabetically. Boxes 28-30 contain interoffice correspondence between Kessler and his employees and secretaries as well as between employees in both offices. These files are arranged chronologically. Box 31 contains office files such as business receipts and office lease contracts. Includes a daily ledger dated 1894-1902. Box 32 contains Kessler's personal files. These include correspondence relating to his homes in Kansas City and St. Louis, his farm in Merriam, Kansas, his mother's estate, stocks, lawsuits, medical receipts, and taxes. Boxes 33-34 contains copies of newspaper clippings dated 1902-1923, as well as a number of undated articles. The clippings are from papers nationwide but mostly Kansas City and St. Louis. Such papers include the St. Louis Post-Dispatch, the St. Louis Globe-Democrat, the St. Louis Republic, the Kansas City Star, and the Kansas City Journal. The clippings are arranged chronologically with the undated material filed at the end. Box 35 contains oversize material. The oversize documents are listed with their respective files in the inventory as well as individually at the end of the inventory. These documents are arranged by blueprint, sketch, map, payroll, and other (any oversize document that does not fall into another category such as stock certificates).