1911 . . . . The unicorn was adopted as a symbol replacing the dragon which had been on the original Coat-of-Arms.
that was when we still considered ourselves to be alpha delta phi.
1915 At the Convention, the coat of arms is modified. The unicorn is changed to a lion rampart with a background of violets and the English version of the open motto – “We live for each other.”
And, all of this can be found at
http://www.alphadeltapi.org/
I also found this interesting
1883 “Who could fail to recall with pride the excitement of the rush we had by the two sororities before we could decide which we would join…the first idea was to impress the young thing with the great honor shown her…Every afternoon large delegations went to the home of the little girl to talk matters over and to urge an immediate decision. Once I recall the Adelpheans waited for me outside the school and escorted me to my home, hoping to stage as grand appeal to my mother, who was supposed to influence a sterner parent, and when we arrived, the place was already overflowing with Philomatheans.” (Loyally, Volume I)
Gotta love those phi mu's (greek love to yall) even 150 years later.