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- [S6] Idaho. Boise., Idaho, Ada County, Boise -- The Idaho Statesman Newspaper (Print), "Alton Alexander Crowell," 19 April 1993, p. 3C, col. 1. (Reliability: 2).
- [S22] Oklahoma. Grady County., Oklahoma, Grady County -- Marriages, marriage certificate (1937), Crowell-Martin. (Reliability: 2).
- [S11] Martin, Sarah Virginia -- Narrative, Extract 000-119.
- [S23] Alden-Waggoner Funeral Chapel (Boise, Idaho), Idaho, Ada County, Boise -- Alden-Waggoner Funeral Chapel, Alton Alexander Crowell Funeral Arrangement Sheet no. 3173 (Reliability: 2).
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