I do not have anything about Esther Behlke except an approximate date of birth. However, I know someone who probably would--her nephew, James Newton Shigley, author of the book on Shigleys "As I Recall". Col Jim Shigley is elderly and has suffered a slight stroke, so be patient when you write to him. His wife, Verna, may answer for you. His father, Ralph Edwin Shigley, was her brother in law. I will also send you an email with my last snail mail address for him. If he has information, which he might, he will get back to you. Good luck!