The collection is arranged into eight series: K series, 1905-1925; P series, 1916-1918; A series, 1925-1939; L series, 1927-1928; M series, 1933-1946; J series, 1935-1937; V series, 1939-1947; F series, 1946-1947. It consists almost entirely of black and white photographs and corresponding negatives of Mack and Saurer trucks, buses and fire apparatus manufactured between 1905 and 1947. Mack Trucks, Inc. hired professional photographers to produce these images for advertising, publicity and factory production purposes. The photographs show vehicles in static poses against neutral backgrounds as well as in operation on construction sites, city streets and highways. The collection also contains detail photos of parts and part assemblies, vehicle interiors, workers, and products in various stages of manufacture along the Mack assembly line. A very small body of correspondencence accompanied some photographs in the M and V series.
