Cannot locate information on the 3874th Quartermaster (gas supply) or the 207th but I did find reference to the 3875th.
Not sure of the nature of your request but if general in nature I am sure that the alumni group for the 3875th would help you. It is likely that they new of the 3874 as they were in the Pacific Theater as well.
For background information and hopefully some details call Mr. Turner
3875th QM (Gas Supply) Co
Mr. Paul A Turner Phone 503-543-2666 34434 Bryan Dr Scappoose,OR97056-3402