Eight "information print" blueprints and one original drawing pertaining to the Voyager's motor from the Aerojet-General Corporation dated 1965, ranging in size from 8.5 x 11 to 38 x 18, diagramming various parts for the "Retropulsion Motor." Also includes a publication by the Aerojet-General Sacramento Plant dated April 22, 1965, 8.5 x 11, 67 pages, containing a proposal for the "Voyager Retropulsion Motor." In overall fine condition, with edge toning to blueprints. Accompanied by a number of disbound pages related to the project, marked "Unclassified," featuring many charts and diagrams.