Two Apollo-era blueprint schematics and diagrams related to the development of the descent stage of the Apollo Lunar Module, including: a 34.5 x 11.25 blueprint schematic from Grumman Aircraft Engineering Corp. entitled in the lower right corner, “Landing Gear Indicator, Electrical & Mechanical Schematic, For Engineering Info Only,” identified as LDW320-21000, featuring schematics for “Landing Gear Temperature Measurements,” “Landing Gear Deployed Switches,” “Temperature Measurement Location Landing Gear,” and “Mechanical Schematic (Shown in Deployed Position”; and a banner-sized blueprint diagram, 82 x 35.5, which contains 1:4 scale drawings of the “Present 160˝ Cantilever Landing Gear, Primary Strut” and the “Alternate Primary Strut,” and 1:10 scale drawings for the “Cantilever Landing Gear, Primary Strut length 121.25˝, Stroke 32.0,” with an update of January 28, 1965. In overall fine, folded condition, with some light edgewear.
