I don't know any other vintage pattern sellers personally. I've talked with a few of them via email. But I can tell you one thing we all share: a vivid memory of things we have found in patterns. I just bought a huge stash and here are some of the fascinating things I've found so far. Click on the first photo for a closer look. The ornament was in the box. But the rest were hidden treasures I found as I started to count pieces. They are:
A lab receipt.
I hope Stan and Steve didn't break anything in Chemistry lab in 1965.
And there are always the pins. Long pins, short pins, colored pins, safety pins. And I throw them all away. My neighbor was surprised at the waste, but they are all going to be either rusty or dull and there's no sense ruining a new piece of fabric on an old pin.
Sadly, I could not find the sleeve pattern made from a wonderful set of 1930s comics. But I know I saved. it. I'll post it when I find it.
The bottom line is that these old patterns are great historical documents, but so are the things I find inside.