With 175 years of sisterhood in our archives, it stands to reason that it’s time to update our history book. Following 2001’s Sisters and 2011’s More Sisters, Alpha Delta Pi is pleased to publish 175 Years of Sisters in time for our summer celebrations. We’ve updated the existing copy with newly discovered photographs – including the earliest known group photo of The Adelphean Society in 1882. We’ve added chapter histories for all chapters installed since 2011 and incorporated biographies of our International Presidents who served in recent years. 175 Years of Sisters will be over 500 pages of stories, reports, photographs, quotes, and more. A full-color coffee table-style book, 175 Years of Sisters will be 9×12 in a portrait orientation, making it a beautiful addition to your bookshelf.

Coming to convention in Palm Desert this summer? You can pick up your copy on site and get it autographed by Grand Council, past Grand/International Presidents, and your favorite convention-going sisters. Can’t join us in California? Order your copy to be shipped directly to your home upon publication this summer. Your book will arrive carefully packed in a cardboard box with protective wrap.

Book retail price: $80
Early bird orders (through February 28): $65
Direct shipping and handling cost: $20
Convention pick-up cost: $0

Important Note
175 Years of Sisters will be available ONLY as a pre-order! We will not be ordering any extra copies for purchase on site at convention or to order from Executive Office. The last day to order is March 31, 2026.