Hi, I am researching Abraham and Barbara (Mook) Shaffer. They are included in the LDS Ancestral File. The Ancestral File states that several of their children were born in Pittsburg, Union Co., PA. Does this place exist? Did it ever exist? In 1840 there was an Abraham Shaffer living in Kelly Township, Union Co. and in 1850 there was an Abraham Shaffer living in East Buffalo Township. Thanks. Vern Erickson