Dave,
Those go to the Air-Way Sanitizor model 66, (circa. 1949), which is blue to match your tools. They did indeed slide onto the floor nozzle and were quite effective.
People at the time and still today, rave about the felt floor pad. The bristled attachment worked fairly efficiently considering the time frame. We know today that a dental notch brush strip or shorter brush row in the front work better.
The steel bars are different from the round rods. I think, and I emphasize, THINK, the steel bars are from earlier models probably starting with the model F from 1928.
And, yes, you are correct, the dusting brush did slide onto the crevice tool. The dusting brush did not become it's own entity until later in production.
I wanted to post a pic of your Green Goddess that I had access too, but had problems doing so, so I am glad you did. Your model is very nice! I've seen several over the years and most have not aged as well.
But, we have to keep in mind these vacuums are from an era long passed by. They also were made of materials that probably were not designed to last 75 years!
Hoovers, arguably, seem to last somewhat better. My Hoover model 150 from somewhere from 1936 to 1939 seems to be far sturdier and interestingly enough, you can still find other 150's out there to get parts from!
Try finding a bumper for a Air-Way DirtMaster! Or an outer cloth bag. Or even disposable paper bags for that matter. I suppose this is why the Air-Way vacuums are so collectible and rare.
Thanks for the great pics and now go find a model 66!
Charlie W.