Seriously dude, the Official US Army sanctioned "WWII Tank destroyers Association Inc" has photos of the (M4A3 hull and chassis based) M36B1 on their 'our vehicles' web page.
WWII Tank Destroyers
The following books reference them
On page 42 of the Squadron book "US Tank Destroyers in Action," and on page 62 of the Concord book "US Tank Destroyers in Combat 1941-1945" is the same head-on photo of an M36B1 in what looks like a forward area. It is identified as being with the 654th TD Bn in support of the 35th Division, Ninth Army. Also noted are 4 victory markings (Nazi flags) on the mantlet representing 2 Pz IV and 2 Tiger tanks knocked out (!).
This 654th Tank Destroyer web page also lists them
644TD-TD's WWII-2
Google Hunnicutt M36B1 187
hunnicutt M36B1 187 - Google Search
He states 187 in the ETO (widely quoted)
and finally here is a lengthy discussion at tank.net about the 90 mm on the M4A3 hull and chassis..
Thread Title: Death Traps
Tanknet > Shermans- death traps?
Death Traps The Survival of an American Armored Division in World War II, by Belton Y Cooper
Presidio Press, 1998. 384. Dimensions (in inches): 1.05 x 6.90 x 4.20 . $6.99. ISBN:0891418148.
None of these 'tank freaks' seem to be disputing their existence.
You folks take a few minutes to read this and get back to
Okay
The thing is in 6 pages of this
TANKERS forum, nobody disputes their existence
Additionally, I would like to reference the United States Library of Congress..
Table of contents for American armored fighting vehicles
But you could be right, maybe..
But I doubt it..