I didn't find an obituary, but there was a funeral notice which gave some family information:
The Oregonian, Saturday, May 30, 1987, page B5, Funeral Notice for: "HENSELMAN - Harry." It listed his wife as Anna, and children as Lucy Payne, Richard, Thomas, William and Robert Henselman, and mentioned there were 17 grandchildren. The funeral service was on June 1st, at Finley's mortuary at Sunset Hills, 6801 SW Sunset hwy. Entombment was also there at the mausoleum.
[Note: The cemetery has been called Sunset Hills and is now called Finley's Sunset Hills Memorial Park, at the same address.]