Reel-to-reel, cassette, and digital recordings and accompanying logs created by fieldworkers. The reel-to-reel tapes are in two formats: (A) 7 1/2 ips/half track stereo and (B) 7 1/2 ips/full track mono. The format for each tape is noted in the tape log section. The cassette tapes are also in two formats: (C) 60 minute mono and (D) 90 minute mono. The format for each tape is noted in the tape log section.