There is a stamp store in Pikesville located at the junction of the beltway and Reisterstown Road that should be able to help you.
GEEZERS TWEEZERS STAMP STORE, Dr. Phil Sager, 1726 Reisterstown Road, Suite 215, 2ND Floor, Pikesville, Maryland 21208. 410-580-1607. In the Double Tree Hilton Plaza Area.
Store hours vary so call first.
Clubhouse location:
Baltimore Philatelic Society
3440 Ellicott Center Drive
Suite 103
Ellicott City, Maryland 21043.
phone 410-465-5712.
The clubhouse is open on the 2ND & 4TH Saturdays, 9 am until noon, and the 1st, 3rd and 5th Wednesdays 7:00 pm - 9:00 pm. Days and times are subject to change; please call or email to verify access to the clubhouse.