I guess I always sort of preferred the Moonflower design, but I felt it was a little small. Then I poked around my saved pictures again and found this one from a 1910 Sherwin Williams painting brochure. It even looks like a very similar stencil.
|From "Your Home and Its Decoration," by Sherwin Williams Co., 1910.|
Update, more than a month later. I found the original source of the stencil I used in the guest bedroom. I found it shown in a 1915 Wards paint catalog. I flipped the stencil horizontally from the way it was shown in the advertisement because I thought it looked like it had flowers, which should be facing upright. =)