Maria,
I just joined your group here because I was searching for information on my newly acquired White Family Rotary Machine, and saw your post. I took the chance, even though it was several years old, and emailed Katie Farmer with my White Serial Number. She was able to tell me my machine was from 1910. Thank you for sending me through this forum Katie's way. She said she is still working on her book, and hopes to have it on Amazon soon. I hope to purchase one when it is available. Thank you so much.
Bonnie
Whitefish, MT