The answers to frequently asked questions about the National Postal Museum and about US Postal Service history can be found by clicking here.
For information about selling a stamp collection, please visit: American Philatelic Society: Buying and Selling.
For information about donating stamps or other objects to the museum, please click here.
Please note: the National Postal Museum cannot estimate values or perform appraisals of stamps or other objects, nor does the museum have free packets of stamps available for distribution through the mail.
To contact the museum about stamps and stamp collecting, please send an email to: PiazzaD@si.edu