EG & G-1023 NN Edgerton, Gerneshausen & Grier, Inc. Brimstone f..ducial markers. Secret 1. 9pp Instrument— ZG & GR1038 Secret Tdgerton, Germeshausen & Grier, Inc. 1. Erimstone ~rhotocrachic recording systems. Davis = Fussell 54.09 Janusry 17, 1950 6 1994 Greenhouse ~~ ation 6 Avril 1949 Fussell and C Keeffe JUN ‘ Greenhouse - } Instrumenta~. tion i JTF~3~-TG=3.4 App. © Secret Joint Task Force THR&E, Task JIF~3-TG—3.4 Group 3.4 Cormunications. Appendix C, Operation Greenhouse, Final Report. . May 1950 “gaat 1951 f Joint Task ; t Foree THREE. + Task Group 3.4. 1, Greenhovse— Instrumentation pe la Ne ie Nee S. — a 19a