Tweets about The Nation’s Game: The NFL from the Pro Football Hall of Fame We've posted 41 Tweets about this exhibition since it opened.

Clementine, the San Francisco @49ers's first mascot, would bray when our home team scored. http://t.co/PyaX1186Bp #TheNationsGame This tweet was posted on September 28, 2015.

The San Francisco @49ers first mascot was a mule named Clementine. http://t.co/2nlTHo96n7 #TheNationsGame This tweet was posted on September 28, 2015.

Our conservators quickly prepped the @49ers Field Vehicle in our gallery as passengers took photos. #TheNationsGame This tweet was posted on September 21, 2015.

Returning to the spotlight in our NFL exhibition is @RAIDERS Jim Otto’s battle-scarred helmet. #TheNationsGame This tweet was posted on September 21, 2015.

Do you recognize this very familiar jersey featured in our upcoming NFL exhibition? #TheNationsGame #BehindTheScenes This tweet was posted on September 21, 2015.