This is a bookplate for James William, Ellsworth, engraved by E.D. French. It is part of the Asmann-Anthony collection. There are two copies of the bookplate in this collection.
The original architect for 901 E. Rosemary Rd. is Lawrence Gustav Hallberg (1844-1915).
A resource mentioning the architect is a Chicago Tribune notice, Nov. 11, 1888, of work on the 901 E. Rosemary Rd. house’s beginning for Levi Yaggy, a Chicago…