Brown first visited the store in October last year.
Last week, when Brown visited Towson, in Maryland, the message on the button was: "Got Crabs?"
The Browns will visit Giants Stadium this season.
On December 14, the 9-2 Browns visited the 8-3 Giants.
Brown visited Douglass' home two months before he led the raid on the federal armory in Harpers Ferry.
Brown visited Lowenfield in his last hours, on April 13, 1988.
Allegedly, Brown had visited the home a few times just weeks before he and Bearden murdered Skipper.
Brown travelled 45,000 miles and visited 13 countries researching the book.
In November 2010, Brown visited Camp Leatherneck, Afghanistan, where she entertained 15,000 troops.
Brown did not visit South America during his term, and the story had originally circulated about a different minister.