This very well could be Hyattsville's 1967 Ward LaFrance as their two other units had higher serial numbers. The DCFD to my knowledge never operated a model 82 WLF wagon. From the other PGFD rosters that I have from that era other than Beltsville at Company 31, no one else operated a 1967 vintage WLF wagon. I hope that this helps out and if anyone can confirm the serial number of this unit please do.
Tom Shand
Hamburg, New York
Tom Shand
Hamburg, New York