Henry Leib m. Sarah Weaver

My g-grandfather was Walter Edward Leib b.3-25-1882 "near" Chambersburg, PA. d. 6-1973 Tipton, IA.m. Theaetta May Cook 2-14-1907 in Tipton, IA.According to his marriage certificate his parents were Henry Leib and Sarah Weaver and he was born "near" Chambersburg. I don't know when he migrated from PA to IA but don't think any of his immediate family moved with him.My grandmother Marian Gertrude Parker (Leib) use to talk about going to PA as a child on a train to visit relatives. I have been searching censuses for the Chambersburg area but can't find any of them. I would appreciate any info. Also I think my grandmother said Walter Leib had a sister named Susan but not sure.
Thanks
Susan