Harriet's may be found on the Find A Grave site #106506880
James Winchell as #106510542; note: his notices do not give a place of interment so I assume was kin to Harriet and placed in same cemetery. He does not appear on the list of Riverside Cemetery burials.
The notice from 1950 is not available by newspaper sites. You can obtain one from the Oshkosh Public Library site for $5.00.
They make it real easy, you click by the notice you want and it prints out so all you have to do is insert your name etc.
I hope this helps.