Hi. I'm not related to this family.I think I may have found a birth announcement for your grandfather in a newspaper at http://www.fultonhistory.com/Fulton.htmlhttp://www.fultonhistory.com/Fulton.html -
Cooperstown NY Otsego Farmer & Republican Fri, Mar 22, 1935 - RICHFIELD SPRINGS - ... page 7 - Mr. and Mrs. Albert Nelson of Brooklyn are the parents of a son, born in the Little Falls Hospital, March 17th.Mrs. Nelson is the former Miss Augusta Hinman of this village.... page 7 - ...Albert Nelson came up from New York, Sunday, to see his wife and son who are in the Little Falls hospital.Mr. Nelson motored here with his sister, Mrs. O'Brien and son, who were the guests of Victor Pierce.
If this is correct, you should be able to order your grandfather's birth certificate from the State of NY.Hope this helps.Annie