The Potter's Wheel, Volume 3, Number 9, page 25, July 1907, Caroline Risque, 20 April 1907

"address delivered to 'the student body of washington university' by l. R. Ernst, april 20, 1907," printed and decorated by caroline risque, page four. Title:the potter's wheel, volume 3, number 9, page 25, july 1907. Date: 20 April 1907.