Statistics for occurrence #1 of “William D. Swan” in chapter 11, page 71 of Historic leaves, volume 5, April, 1906 - January, 1907:

...hem. These five teachers were Joshua Bates (salary, $800) and James Swan ($700) at the Training Field school; Nathan Merrill ($700) and Reuben Swan, Jr. ($700), at the Town Hill, or Female, school; William D. Swan ($700) at the Neck School. We are able to name the teachers who served in the ten primary schools this year, at a maximum salary of $225. They were: A. G. Twy–
...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
William D. Swan 22 20 0 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.