The two volumes present information on the structure, grammar, and alphabet of the language of the Otoe and Iowa Indian tribes. They are intended to support the teaching and maintenance of that language and culture. The first book introduces the reader to simple sentences in three segments: letters of the alphabet, with a simple illustrative story; short conversational sentences to be memorized and/or adapted; and grammatical explanation of the units of the simple sentence, with substitution drills of basic phrase and sentence types. The second book begins with a review of the alphabet and phonology and a prayer and the Ten Commandments presented in the target language. Subsequent sections contain: a review of simple sentence structure with more emphasis on verbs and modifiers; a unit on compound sentences; a unit on complex sentences; 10 stories and conversations, with translations; and lyrics to nine songs and hymns, both Indian and Christian, with translations. Vocabulary lists are appended. (MSE)