November 5, 1951

Me, William L. Belser,
Dept. Microblology
Yale University

New Haven 11, Conn.

Dear Hr. Belser:

I will be happy to accomodate your request for reprinta and future
mailings as far aacthe available supply permits. I hope you will under-
atand that many reprints are no longer availaole, oul tae enclosed

circular may be of intereat to you in this respect.

Yours sincerely,

Joshua Laderbarg