Thirty young men, players and officials of the Riverside Football Club, pose for a studio portrait, one holding a football on which has been written "Undefeated 1931". The damage to the negative makes other words illegible, but they are likely to be the name of the club.
Eighteen men are in the players uniform The others in suits and day wear are most likely officials and coaches of the club.
Riverside was founded in 1928, and the "Rivvies" won six premierships in the Port Adelaide Association 1928-1933 - this image is the team from their fourth premiership win. Riverside merged with Ethelton and Alberton United Football Clubs in 1997 to form Portland Football Club.