Looking for our brother, born 6-16 in 1956, 1957, or 1959

Father: John A. Callihan, Sr. (B. 10-17-16, D. 9-20-89) Mother: Martha A. "Garrison" Lachowsky (B. 11-17-22, D. 7-31-87) We are looking for our half-brother, born in North Little Rock around June 16th. We are not sure of the exact year, but we believe it to be 1956, 1957...or possibly 1959. We hope you are out there...please contact.