The Girl Scouts of America held in 1956 the first Senior Girl Scout Roundup.  The event was located in Milford, Michigan.  A total of 5,000 girls attended.

Two cachets and three post cards printed by SOSSI member Harry Thorsen are known.  There was no special cancel.



SOSSI Journal, Vol. 27, No. 4, April 1978
Created by Keith Larson, 2000.