Mary Ingalls never wrote a book. "Wilder" is Laura Ingalls' married name, and she wrote the "Little House" books.
Mary Wilder Tileston was a 19th century author and editor of several spiritual books, such as Joy and Strength and Daily Strength for Daily Needs. She was no relation to Laura Ingalls Wilder either.
Alfred Ira has written: 'Liebe'
Annie Wilder has written: 'Spirits out of time'
Joan Wilder has written: 'The jewel of the nile'
Ira Lathief has written: 'Tukul Arwana'
Ruth Wilder Braisted has written: 'In this generation'
Ira Valeria Sarma has written: 'The Laghukatha'
Ira Avery has written: 'The five fathers of Pepi'
Harold Ira Nelson has written: 'Land and power'
Ira S. Trimble has written: 'Dungannon and surroundings'
Ira Jan Wallach has written: 'Gutenberg's folly'
E. James Wilder has written: 'The Stages Of A Man's Life'
Ira M Lapidus has written: 'Middle Eastern Cities'