Could you post pictures sometimes of your Douglas ATV (All Terrain Vac)? I don't think I've ever seen a Douglas shop vac before. I'd appreciate seeing some if you could.
I haven't used that vac in years. It's buried in the depths of my storage building, which I affectionately call 'the barn'. I'll try to dig it out soon and snap a couple of photos.
Per your request, here's a photo of the Douglas ATV7 wet/dry vac. It's really not much and I didn't take the time to clean it up. I've been trying to remember the last time I used it. I think it's been about 20 years. I bought the thing in about 1994 or 1995 when a pipe broke in a neighbor's apartment and I needed to get the water up and the property management company was in no particular hurry to get it done. It was handy on the occasions that I needed it but I've got a much better one now.
Thanks for sharing. I don't think I've ever seen one of those before. It is a bit plainer looking than I expected, although most Douglas made vacuums are that way.