The collection includes Collier’s extensive logging photograph collection; photographs, documents and letters documenting his World War I military service and family history materials.

Series I: Logging and Local History Images consists of several thousand prints and negatives. Topics include logging, lumber mills, railroads, Collier memorial State Park and Logging Museum, Klamath Falls, Oregon and Klamath County, Oregon. Prints are generally described at the item level. The negatives are not described.

Series II: World War I includes several hundred images documenting Collier’s military training, his battlefield service in France and his service in the Occupation of Germany (1917 to 1919). Collier’s letters to his family, his Army training manuals and notebooks complete the series.

Series III: Family History includes newspaper clippings, correspondence, and, photographs of the Collier family dating from late nineteenth century to the mid-twentieth century.