A request for help

Greetings!

Recently, I came across a conundrum of a most puzzling nature. I have been led to believe that the members of this esteemed society might be able to aid me in shedding some light on this mystery.

Several of you have already most generously offered your assistance, but I fear this puzzle might be so great that further help will be needed. Will you join us in our endeavor?

Any aid would be greatly appreciated.

Sincerely,
-Prof. Charles Emerson

Vinson’s Cove, Massachusetts
May 23, 1923