Your post mentions a J B Pospisil. My great grand uncle was Jerome Benjamin Pospisil, who went by JB. He was born in Dodge, NE on 2-DEC-1884 to Alois and Marie (Hovorka) Pospisil.
On 17-APR-1907 he married Libby A. Vavra in Cedar Rapids, IA. Her parents were John Vavra (1850 - 13-MAR-1937) and Antoinette Calond (18-MAY-1846 - 11-MAR-1939).
Libby had two siblings....Mary Vavra (27-NOV-1881 - 30-JUN-1959) and Frank Vavra (16-AUG-1885 in Bohemia to 21-DEC-1973 in Long Beach, CA).
If we need to exchange more
details....warrenasokol@yahoo.com.