I just came across Phil Young's exhaustive study of Tilly's life and work.
I understand that every spring a new version will come out with additional entries and sections. For example, currently Phil is planning on adding a section showing all aerial photographs taken of Tilly courses prior to 1950 next year. You can request a FREE copy of it by emailing Phil at:
tilly@goldenageresearch.comAlso, I understand that Phil is planning on releasing a new, exhaustive history of Bethpage and its 5 golf courses this fall.