Hyde Park - Robert Porter Graham III, 87, of Hyde Park, passed away on Friday, November 26, 2021, at the Mid-Hudson Regional Hospital of Westchester Medical Center in Poughkeepsie.  Born June 27, 1934, in Pittsburgh, PA, he was the son of Robert P. Graham Jr. and Carolyn Wolf Graham.  A recipient of the Good Conduct Medal, he proudly served as a Radar Technician in the United States Army in the late 1950's.  Bob worked at IBM in the Hudson Valley for thirty-six years and retired from Fishkill in the early 1990's. He was a member of the Institute of Electrical and Electronics Engineers.  Mr. Graham was a member of the Freedom Plains Presbyterian Church in Lagrangeville, where he also sang in the choir.  Survivors include his three children, Syeda M. Graham and husband, Mohammed Benyusuf, of Kansas City, MO, Grayson E. Graham of Hyde Park, and Robert P. Graham IV and wife, Maureen, of Staatsburg; seven grandchildren; one great grandson; brother, John Graham and wife, Constance, of Chicago, IL; and several nieces and nephews.  In addition to his parents, he was predeceased by one sister.  Calling hours will be from  4 to 7 Pm, Tuesday, November 30th at Sweet's Funeral Home, Rte. 9, Hyde Park.  Graveside services and burial will be at 11 AM, Wednesday, December 1st at Freedom Plains Cemetery, Lagrangeville. Rev. Paul Lent will officiate.  To send an online condolence, or for directions, please visit Bob's obituary page at www.sweetsfuneralhome.com .