The listing, USA #1387-1390 1970 Natural History, Dinosaur, Bald Eagle, Elephant, Canoe, mint has ended.
USA block of 4 stamps commemorating Natural History and includes: American Bald Eagle, African Elephant Herd, Haida Ceremonial Canoe and Age of Reptiles (Dinosaurs)
Year: 1970
Catalog # 1387-1390
Condition: full gum, mint never hinged, post office fresh
I have several of these blocks of 4 stamps, all identical, the scan is representative of what you will receive.
My general terms for stamp-related Listia lots can be found here (please read, it answers a lot of basic questions):
http://listiarules.webs.com/