Robert D. “Bob” Donaldson Jr., born May 23, 1920, in Anoka, Minn., passed away May 9, 2011, in Rockport, due to complications arising from a broken hip.

After graduating from the University of Minnesota, he became a mechanical engineer working for Curtiss-Wright Propeller in New Jersey in World War II. He earned an advanced degree from Stevens Institute of Technology in Hoboken, N.J.

A lifelong passion for stamp collecting led him to operate Bob’s Stamp Exchange in his spare time for over 50 years, and that doubtlessly sparked an interest to be in different places around the world.

He began working in the Panama Canal Zone in 1954, retiring there in 1981 after becoming chief of the Engineering Division. His work included a five-year assignment in Yokohama, Japan, managing construction of the Panama Canal’s new ship-towing locomotives.

After retirement, he and his wife, Elaine, settled in Rockland, and he did substitute teaching in that area in elementary and high schools up into the 1990s.

His family and friends enjoyed his hundreds of humorous and ever-changing stories about his life experiences.

He is survived by his wife, Elaine; his children, Bert, John and Rae; his stepsons, Arthur and Robert; and his granddaughter, Elizabeth.

A memorial service will be held Friday, May 13 at 11 a.m. at Aldersgate United Methodist Church, 156 Lakeview Drive (Route 17) in Rockland.

To share a memory or condolence with Mr. Donaldson’s family, visit his online guest book at bchfh.com.

Arrangements are with Burpee, Carpenter & Hutchins Funeral Home, 110 Limerock St. in Rockland.