Horizon, Autumn 1968, Summer 1969, Spring 1970, Winter 1973

Horizon are exceptional catalogs from the 1960s and 1970s showing breathtaking pictures from artists and architects like Antoni Gaudi, Joseph Wright, Hieronymus Bosch and Theodor Gericault. It is an absolute must have in your library for the photos are absolutely unique.
They are currently available on Ebay for 25 dollars.
https://www.ebay.com/itm/114228492995