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Thank you very much for your letter 02 June 21 Pconcerning radleactive LSD.At that,timn we wareout-ofisupply and wanted to wait untli he chemlet cculd tell ue about the ner batch or ct-LSu ne wae preparing. Within the nert g-l0 jaye, ampuls of iaceled sd vlll te roady containin3 O,5ag of the zubetance in 1 cc. : Tne epecific activity will be o-? mlerccuries per miiligram (2.millicureie per,millinol). We could eend you only. a few milllgrams of this LsD, since le  50.- per mg and covers only our oxpenses for buying the\~radicactlve' acetonitrile used for the synthssle. With bent regarde. we ramain.

Sincerely yours,

poly 13. 1955 A/EI2117