also,
www.fultonhistory.com has some newspaper articles on him being in the service and marryung constance in the geneva newspapers
eg
Geneva NY Daily Times 1947 Jul-Sep 1947 Grayscale - 0113.pdf
...of the Gene- va Recruiting Station. One of the men, Albert C. Hopf, 32, son of Mr. and Mrs. Charles G. Hopf, 37 ...