After an internet search, I was unable to find an owner's manual for the Thermos 8326 double mantle lantern. However, I did find one in a Thermos box! I have scanned it and am sharing it here!
Name: Murff ICCC Member #726
Coleman Blue's 243's #002 Ebay Handle: Happy-campers2
EX-ICCC Newsletter Editor & Full time Coleman Addiction Enabler
Part-time Idito and Hater of Turd 275s, both A and non A
Current ICCC Board President