The collection pertains to Dave Radlauer, Bob Mielke, Dick Oxtot, Earl Scheelar and other musicians involved in the San Francisco Bay Area jazz music scene from the 1940s to the 2000s. The materials are composed primarily of sound recordings, video recordings, and photographs. There are also festival programs, newspaper clippings, correspondence, notes, flyers and various ephemera. Additionally there are digital files that were stored on an external hard drive owned by Dave Radlauer. After a disk image was made of the hard drive it was returned to Dave Radlauer. The contents of the hard drive are 2552 photographic, audio and document files totaling 270.66 GB. The breakdown of these files are 622 audio files totaling 205.95 GB, 1,561 graphic files totaling 64.7 GB, and 369 document files totaling 14 MB. A significant portion of the electronic files are digitized versions of physical items that are in the collection. There is also a number of additional original electronic files. The document files are inventories, spreadsheets and lists of the electronic files.