Nancy - Someone on a collector's board linked me to this:
http://home-and-garden.webshots.com/...62576881KNhqLm according to the description (rectangle slide plates, wooden access door to the left, and no "FR" in front of the serial number) it's a White Family Rotary dated between Sept 1903 and Feb 1906.
It has to be post 1900 because there are several patent dates on the slide plate, the most recent being 1900
ETA: the main site
http://home-and-garden.webshots.com/...78886693lsIAUe