I looked into SpringChick's questions. Our friend at Fish and
Wildlife says that the Mason Neck National Wildlife Refuge wants no
letterboxes in the Refuge. If you have boxes planted there, they
would like them to be removed, and the clues taken off the website.
If anyone has questions, please e-mail Marty_McClevey@fws.gov.
Mason Neck State Park is a different place from the Refuge,
although they border each other in some places. (I didn't know all
this!)Our friend is NOT talking about the boxes in Mason Neck State
Park.
Hope this helps!