The top three photos are by KB of the UK.
I found those photos on a Toy Message Board visibleinnards.org.
The other photos are from ebay. Didn't know until today that the toy line had anything beyond the figures. I may build some moon buggies and space crawlers based on these old Marx designs.
I hope to have a list of most of the photos soon. I don't own any of these toys.
The bottom two photos are from eBay
Johnny Apollo Space Sled 1968
( John Eaton told me these were part of a 10 inch toy line.... )
( .....called Operation Astronaut )
item number 190616990364