Published on Jan 14, 2014
John Green is a Canadian retired journalist and a leading researcher into the Bigfoot phenomenon. He is a graduate of both the University of British Columbia and Columbia University and has a database of more than 3000 sighting and track reports, leading some to affectionately refer to him as "Mr. Sasquatch."
Green first began investigating Sasquatch sightings and track finds in 1957 after meeting René Dahinden and the two researchers collaborated in interviewing witnesses and sharing information of alleged sightings. A year later Green was shown a series of 15" tracks crossing a sandbar beside Bluff Creek in California so deeply impressed as to indicate a weight many times that of any potential hoaxer. He has been trying ever since to establish what it is that makes the tracks. Green is also the only surviving person to have investigated the original Sasquatch tracks reported in Bluff Creek, California in the summer of 1958.
source: http://en.wikipedia.org/wiki/John_Willison_Green#Sasquatch_Investigation_work
Related:
Interview: John Green Weighs in on Debunkers