Hi, my paternal grandfather is Leon W Ryder, who I believe may have been Principal of Princeton High School in 1921. He is listed on the invitation. I have a copy of a dance card from a school dance at Princeton right around that time but would have to get my file to tell you what year the card is from. I would be interested in knowing of any information you might have re: Leon W Ryder or any members of the Leudtke family, including Myrtle Luedtke who was my paternal grandmother. I have a brass bell that my grandfather rang to call the students in from lunch. My family has used it as a dinner bell since the mid fifties.