These volumes, contents and transcripts of Diehl's Hopi recordings, include: Hopi words, phrases, texts, counting, and grammar (particles), some with English equivalents; Navajo (one reel) words and phrases with English glosses, and Navajo literacy lessons. Also includes: duplicates of Hopi recordings of Carl F. Voegelin; restatement of some material in the Voegelin recordings. Hopi informants include: Willie Coin, Jimmy Kewanwaytiwa, Bennie Nuvanisa, and Albert Yava.

Hopi words, phrases, texts, counting, and grammar (particles), some with English equivalents; Navajo words and phrases with English glosses and Navajo literacy lessons (one reel). Includes duplicates of Hopi recordings made by Carl F. Voegelin. Hopi informants include: Willie Coin, Jimmy Kewanwaytiwa, Bennie Nuvanisa, and Albert Yava.