Skylab, Classroom in Space By Summerlin, Lee R. Books / Hardcover Transportation › Spaceflight Publisher: NASA, January 1977 Price $14.62 Free Shipping Send to a friend Collectible - Good First Edition First edition copy. Collectible - Good. (Skylab, NASA, Space Flight, Space Exploration) $14.62 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.