Booster Separation

Exploring Tomorrow in Space
Thomas Becker
Sterling, 1972

Image credit: Grumman
Image source: Numbers Station

Shuttle Into Space

Shuttle Into Space
G. Harry Stine
Follett, 1978

Image credit: North American Rockwell
Image source: Numbers Station

McDAC A Alternate

Image credit: McDonnell Douglas
Image source: Numbers Station

STAR Clipper

Image credit: Lockheed
Image source: Mike Acs

NAR Nuclear Ferry

Image credit: North American Rockwell
Image source: SDASM Archives

MSFC 69-PD 4035

Image credit: NASA Marshall
Image source: NASA Images

Expendable Second Stage Mission

Image credit: Convair
File source: NASA NTRS

S-71-20741

Into The Unknown
by Don Dwiggins
Golden Gate Books, 1971

Image credit: McDonnell Douglas
Image source: Numbers Station