A copy of the Smullen Family of the Eastern Shore or MD, 1680-1974 by Eugene Earl Trimble is now available at the library of the Historical Society of Montgomery County, MD.
The library information is:
Jane C. Sween Library
Montgomery County Historical Society
111 W. Montgomery Ave.
Rockville, MD 20850
301-340-2974
info@montgomeryhistory.org
The library is open Tue.-Sat. 10 AM-4 PM and Sun. 1 PM-4PM
The website for the library indicates that the preferred communication for research information is the email link.