John B. Olszewski, 87

John B. Olszewski, who had moved in June from Saratoga Springs, N.Y., to West Palm Beach, Fla., died at Good Samaritan Hospital there on Aug. 22 of prostate cancer. He had been ill with heart problems and other cancers for 10 years.

Mr. Olszewski, a Sag Harbor native, trained after high school to be a meteorologist for the United States Air Force, and served for 21 years as a technical sergeant with the title of weather officer on bases in Austria, Germany, Greenland, Maine, and New Jersey. After leaving the Air Force, he moved back to Sag Harbor and worked from 1969 to 1986 as caretaker of the East Hampton Library, while also looking after three estates in East Hampton Village. In November 1977 he married Doris Kabelitz of Sag Harbor, who survives.

Mr. Olszewski had several hobbies, including skeet and trap shooting at the Maidstone Gun Club, meteorology, and birdwatching.

In 1986, he and his wife moved to Saratoga Springs, where he worked for an engineering and construction company, Laquidara, that built hydroelectric dams. He retired 10 years later.

John Benjamin Olszewski was born on Sept. 25, 1929, to the former Rose Kwiakowski and Walter Olszewski. His brothers and sisters all died before him. He attended St. Andrew’s School in Sag Harbor and graduated from Pierson High School there.

A stepson, Gary Kabelitz of Sag Harbor, and a stepdaughter, Gail O’Neill of Palm Beach Gardens, Fla., also survive, as do a niece and a nephew.

Mr. Olszewski was cremated. He is to be given an honor guard ceremony at Calverton National Cemetery in Wading River.