Margie, wonderful! Arthur's wife Elizabeth (Yunker) Leu was the sister of my g-grandmother, Mary Yunker Mahowald. I have two photos of her as a young woman. One with Mary and the other with Arthur. I have a biography of thier brother Herman and some other sketchy family history. My e-mail is email@example.com. Please contact me there so we can share data. I would love to e-mail the photos, bio and the limited tree that I have. I am thrilled to hear from you.