Every Star Wars collector know Stephen Sansweet. The ultimate Star Wars collector and owner of Rancho Obi-Wan,which houses the largest Star Wars collection museum.
Sansweet published From Concept to Screen to Collectible back in 1992. It was one of the first toy books to take us through the evolution of Star Wars toys. Plenty of text to tell the story and awesome full color photos.
Used copies can be snagged on Amazon for under $5.
Star Wars Action Figure Archive, published in 1999 was a great update and also includes the first few years of the Kenner/Hasbro Star Wars rebirth.