It is with profound sadness that we announce the passing of Robert (Bob) Parker Jackman, an
exceptional man, father, and cherished friend to many. Bob was also the adored grandfather of Chase
and Zoe Jackman. Bob departed this life peacefully on June 23, 2026, at the age of 91. He was
surrounded by love and the comforting presence of his two children, Lisa Jackman Morris and Ty
Jackman at Saint Francis Hospital.
Bob was born in Blackwell, Oklahoma, on December 9, 1934, to the late William Henry and Etta
Jackman. He is also preceded in death by his brother William Donald Jackman. Robert attended high
school in Sapulpa and Miami, Oklahoma, graduating from Miami in 1952. He earned a bachelor’s degree
in Geology from OSU in 1957.
His career was as an Independent Oil and Gas Operator and Petroleum Geologist. During retirement he
worked on many philanthropic projects such as exposing the cause of Oklahoma earthquakes from
wastewater injection wells. He investigated poultry farm biohazardous waste leaching into groundwater.
He had a passion for saving Lake Atoka’s water. In between projects he painted, wrote poetry and
newspaper articles. Bob was a lifelong member of the YMCA where he enjoyed camaraderie and staying
healthy. His spirit was of encouragement and laughter. He was always ready with a joke or a kind word
of encouragement.
A gathering to celebrate Bob’s extraordinary life will be held on July 19, 2026, from 2:00 PM to 4:00 PM
at the Herman and Kate Kaiser YMCA and Community Center, located at 5400 S. Olympia Ave, Tulsa,
OK 74107. Family, friends, and all whose lives were enriched by Robert are invited to join in
remembering and honoring a truly remarkable man.
Donations can be made to the YMCA of Greater Tulsa. As we say goodbye to Bob, let us carry forward
his legacy of positivity, humor and a steadfast commitment to making the world a better place by always
questioning authority.
