g- %va3 6 Bovember 1951 Arned Forees Special Weapons Project Washington, BD. CG. Attention Technical Library Gentlemen: In accordaned with letter dated 26 September 1951, from Col. George ¥. Schlatter, Division of Military Application, to Dr. A. CG. Graves, Los Alamos Scientific Laboratary, we are forwarding to you undar separate cover the two baxes of cards bearing radiological exposure Gate from GREENHOUSE. It is ote understanding that you are prepared to acospt these data for permanent retention. Very truly yours, ORIGINAT. SIGNED BY LEO 6. CHELIUS Leo 0. Chelius Rad-Safety Group 1001jds oo: Col. G. F. Schlatter d—-DivisionMail & Recards Ret-Safe Filec-—~