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From the 1923 Ouija: "Every Saturday before Easter, it is customary for the fellows to adorn themselves with 'Easter Bonnets,' and to show the girls just what the latest styles are. From this exhibition, the girls are able to get an idea of what kind of an Easter bonnet they should get."
"This year  we did not have any exhibition owing to bad weather. The above picture is from last year's "Passing Show" and gives one an idea of what it is like."
Photo from the 1923 Ouija, Grove City College yearbook.