Re: Bomber losses 7 April 1945
I never did any research on air force, but here are some thoughts that might be of help.
Go to this web page
and select "MACR" under the "Databases" tab.
Fill in "Start Date" and "End Date" with 04/07/1945, and select B-17 under "A/C Type".
You will get 14 hits. With the MACR number it appears you should be able to get further info. (Perhaps with the other info, also, such as aircraft serial number.)
Go to this web page for info about obtaining MACR info:
As I indicated, I have never used any of this stuff myself. I hope you can use it. Good luck.