Russian phonetics on aluminum discs

Languages: 
Collection Descriptive Notes
A female and a male consultant take turns reciting words, minimal pairs, short sentences, etc., and conclude with two dialogues.
Collection Technical Notes
Neither the author’s name nor the names of the speakers appear on the discs but are supplied from the notes of N.A. McQuown. The spelling of “Sakiyan” and “Nayakovskiy” are his.
Contributor
Sakiyan, (Mrs.); and (Mr.) Nayakovskiy
This collection has no playable audio.