Levitt, I. M. Dr.2018-10-042018-10-041961EPM-064-01-015http://hdl.handle.net/20.500.11867/14183Single 15 x 11.5 inch sheet, bi-folded booklet style. Printed recto and verso. Single 22 x 17.5 inch sheet. Printed. Images stitched to preserve content. Date est.A newsletter on the future of space exploration done by the director of the Fels Planetarium in Philadelphia. Also includes a poster-sized newsletter.AeronauticsDrawings