Huge vintage blueprint for "Layout, Umbilical Release Mech." prepared for NASA-MSFC by the Douglas Aircraft Corporation, one page, 63.5 x 36, with an original drawing date of April 28, 1961. The blueprint features multiple diagrams of the umbilical release mechanism, with notations related to its specifications and various components. Stamped in red: "Reference Copy for Eng. Reference Only." Folded and in very good to fine condition, with uneven overall toning.
