The 1973 Supreme Court decision established a legal right to abortion.
The Masses begin at 7 and 9:15 a.m. Tuesday at St. Mary on the Hill Catholic Church, 1420 Monte Sano Ave.
The church will also host a brief outdoor prayer service at the Memorial to the Unborn outside the church narthex at 6:15 p.m. Saturday, said the Rev. Jerry Ragan.
Call (706) 262-0340 for more information.