September 18, 1961

Or. Francis J. Ryan
Department of Zoology
Columbla University
New York 27, New York

Dear Francis:

! will be coming Into New York for a New York Academy of Sclences
conference Thursday and Friday, October 5 and 6. Perhaps this was Just
wishful thinking, but | seem to recall an invitation to stay with you
on such an occasion, and | am writing now to ask you whether this would
be convenient. in any case, | hope not to miss an opportunity to see
you and Betty.

If this should discomnode you In any wey at the present time, may
i ask you to book Into the Barbizon Plaza Hotel, where the meetings will
be held, as an expedient alternative. 1 will be coming up from Washington,
probably by an evening plane Wednesday night, October 3; tf there Is any
problem locating you In the phone book, | might ask you to write to let
me know your present address and phone number. | will be leaving for
home again Fridey evening.

With best regards,

Sincerely,

Joshua Lederberg