Mr. and Mrs. Ronald Heerdt of Depew celebrated their 50th wedding anniversary with a party for family and friends in their son’s Elma home. Mr. Heerdt and the former Patricia Damian were married Feb. 28, 1964, in United Church of Christ/Evangelical and Reform Church in Buffalo. He is a retired electrician for GM Powertrain in Tonawanda. She is a retired customer service representative for Time Warner Cable. They have four children and nine grandchildren.