Shuttle Program at Astronautix
Image credit: Boeing
Image source: Numbers Station
Category: Lockeed
Operational Concept
Lockheed Star Clipper
Star Clipper
Shuttle/Agena Study
Agena Tug Installed in Orbiter Cargo Bay 
Evolutionary Stage Agena With Intelsat IV Payload 
Agena Tug on Orbit with Lockheed Communications Satellite
Shuttle Program at Astronautix
Image credit: Lockheed
Image source: NASA NTRS
LS-200
Shuttle Program at Astronautix
The Sunnyvale Shuttle: Lockheed’s STAR Clipper at The High Frontier
Image credit: Lockheed
Image source: SDASM Archives
