Original unsigned carbon copy memo issued by Star Trek creator Gene Roddenberry to Robert H. Justman, four pages, 8.5 x 11, Desilu Productions letterhead, April 7, 1966, with the subject: "Spaceship Model." Roddenberry lists changes to be made to a spaceship model, detailing modifications to "ball power nodules on front of the twin nacelles," "filigreed panels," "rounded domes on rear of twin nacelle pods," "handles on twin nacelle pods," "bridge dome," "additional lighted windows on ship," and "light source inside of both pods." He also comments on lighting, camera speed, schedules, budgeting, and other important productions matters. This historic document reveals Roddenberry's meticulous attention to detail, from the artful creation of spacecraft models to the audience's ultimate perception of the product: "This U.S.S. Enterprise is terribly important to us—if the audience doesn't not believe it, they are not going to believe a multimillion dollar series investment." In fine condition.