Hello Wilford. I have never seen a picture of the full 830th EAB and usually you only see company level photos. A full battalion is over 1000 people so it would hard to pick individuals out of a battalion picture.
The 830th EAB didn't publish a "yearbook" at the end of the war as did many other units but Merck Hancock, a member of the 830th EAB, did publish a memoir and unit history in 1973. I looked through my copy and did not see any photo captioned with the name "Wilford Case." This name doesn't show up in his list of known members either so he either missed your father in his list, I have your father's name wrong or he was in another unit. Are you sure of his unit affiliation?
Do you have a copy of your father's DD-214? This would list his unit at discharge.
David I do have my Dad's Discharge and it list his Unit as Company C 830th EAB.... Is it possible the clerk at that time typed in the incorrect info?