I am interested is locating a minister by the name of Harold Goldsung
who was the pastor of the Second Refomed Church in Schenectady NY in
the years approx. 1964 to 1970

Try contacting the church:

SECOND REFORMED CHURCH, 518-374-0212
3 MORRIS AVENUE, SCHENECTADY NY 12308 

or the regional synod:

Synod of Albany, Schenectady, New York: (518) 374-4573; Fax: (518) 374-4996 

or the mother organization:

http://www.rca.org/

I hope this helps.