Manuscript notes of and some related letters to Knowles relating to his research on a 16th century English manuscript, ANATOMIE OF SPAYNE, 1599. The letters are from various scholars, librarians, and researchers both in the United States and England, who responded to Knowles' requests for information. There are photostatic copies of the manuscript as well as photostatic copies of related manuscripts and printed items used by Knowles in the course of his research. Also, a typescript of the English text with annotations by Knowles. The research appears to be incomplete since the letter file ends in 1967, the year of Knowles' death.