Table:
text: 1956 Washington Redskins season
Schedule
Schedule
Week Date_ Opponent Result_ Attendance
11 December 16, 1956 Pittsburgh Steelers L 23-0 21097
12 December 23, 1956 at Baltimore Colts L 19-17 32994

Question: Which week of the 1956 Washington Redskins season had fewer than 21,097 spectators in attendance?