This collection consists of glass plate negatives, mostly gelatin glass negatives, and some photographic prints. While most of the images in this collection were captured by either John C. Brewster or Waldo Henry Dingman Sr, some may be the work of other photographers. The negatives are largely of Ventura County locations, historic sites, persons, and events, such as parades and holiday celebrations. There are also several boxes of unidentified negatives.