Gamma Ray Astronomy and The Gamma Ray Observatory

11.25 x 10.25 in. Brown vinyl 3-ring binder holding 21 plastic sleeves, two replaced. 21 pages of text and 17 8x10 in. color photos, all printed in landscape format, so that the binder is to be held sideways with rings at the top. Each photo has a small paper label to bottom left corner, numbered Figure 1-17. Some wear to plastic sleeves and black paper backings to photos. Offsetting from text to inside front cover. Two stapled leaves of xeroxed notes laid in, referencing future projects to be completed in the years 1980 and 1981. NASA research proposal for the Compton Gamma Ray Observatory, which launched in 1991. "The Gamma Ray Observatory is ready to be started now!!".