The NO Plays of Old Japan, by Stopes. Dutton
The NO Plays of Japan, by Waley. Knopf
Medicine-Men of the Apache, by Bourke
9th Annual Report, U. S. Bureau of American Ethnology
Tusayan Katcinas, by Fewkes
15th Annual Report, U. S. Bureau of American Ethnology
The Point Barrow Eskimo, by Murdoch
9th Annual Report, U. S. Bureau of American Ethnology
There are several excellent books on Masks in French, German, and Italian