Chancellor Hall announced suspension of "all classes and gatherings after 12:30" Wednesday October 9, 1918 (as reported in Student Life Vol 43. No. 2, October 11, 1918).
Administrative work continued, and professors continued to work in their office. Football and hockey practice also continued. Graham Chapel became a Red Cross shop where students made Influenza masks. The student newspaper noted that campus was empty and ran a comic article with a blank space as the "detailed composite of student activities during the past week." (as reported in Student Life Vol 43. No. 3, October 18, 1918).
Classes resume Monday November 18, 1918. To make up for the lost 6 weeks, classes were scheduled longer each day (until 4:30 pm), and only Thanksgiving Day and Christmas Day were observed as holidays. (as reported in Student Life Vol 43. No.8, November 22, 1918)
The influenza situation at Washington University is considered at an end by November 29, 1918, when less than 8 cases were reported in the previous week (Student Life Vol 43. No. 9, November 29, 1918).
For further information, see:
Online Primary Sources about 1918 Influenza (From other archives across the US):