Found 2 possibilties:http://www.omahahistory.org/
>Online Photo Collection
Calvary Baptist, Omaha
Click on baptist
Brings up several Baptist, one is a composite of 5 churches..Calvary being one of them.
Can be ordered online.
Did a general search for pictures of Cavalry Baptist Church, Omaha
Found a site called Durham Museum in Omaha that has a photo collection. There are at least 4 or 5 of the church on Cumming. It say" please contact Durham Museum for permission to use the digital image."