The longtime Sparks resident was 67.
Mr. Schreiber, a third-generation railroader whose father and grandfather worked for the old Pennsylvania Railroad, was born in Altoona, Pa., and later moved with his family to Gray Manor, a southeastern Baltimore County community.
When he was 15, his family moved to Sparks, and Mr. Schreiber graduated in 1962 from Hereford High School.
He went to work for the Pennsylvania Railroad in Baltimore in 1965, eventually advancing to freight conductor. He worked for successor companies Penn-Central and Conrail.
He was an active member and former local chairman of the United Transportation Union.
He retired in 2005.
Mr. Schreiber and several of his close friends, who were known as the "Rat Pack," "enjoyed going to Atlantic City to gamble," said his wife of 34 years, the former Sandra Maddox.
"He also loved thoroughbred racing and enjoyed going to Delaware Park and Penn National Race Course," said Mrs. Schreiber.
Mr. Schreiber also liked to play pinochle and travel.
"He also loved spending time with his family and nine grandchildren," said Mrs. Schreiber.
Services were held Wednesday.
In addition to his wife and nine grandchildren, Mr. Schreiber is survived by two sons, Jeffrey Schreiber and Mitch Schreiber, both of Parkville; two daughters, Susan Pace of Brooklyn and Debra Groscup of Street; and a sister, Linda Webb of Jarrettsville. Another son, Arlie Williams, died last year.