I am doing a little national geographic research project and I am interested in identifying the volume # that the following images appeared in. I am hoping to find some helpful minds with impressive collections to help me out with this :) These should've appeared sometime in the 1970s, 1980s or 1990s. If you feel like you recognize these images from your editions, please take a look and let me know if you happen to find one!
I've uploaded and labeled the images on Imgur:
Hope to hear back from some of you !
#1 Dec 1974
#2 Dec 1984
#4 Oct 1993
#7 May 1993
#9 Mar 1974
#13 Sept 1981
#14 Sept 2000
#15 Aug 1982 Sinkholes
Hi there :) thank you so much!
If you ever find a spare moment, do you think you could possibly send me pictures of those pages so that I can make sure I order the correct ones on ebay?
I would greatly appreciate it :)