Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Messrs Harrison & Sons. Philosophical Translations: Instructs publishers to look out for 5 copies of Vol. A 221 and separate papers to stitch up and wrap in paper; reason given is that although the separate papers are out of print there is the occasional demand for them and asks Harrisons & Sons to either send them to the Royal Society or to their own Sales Department. 6 February 1924