I went through the 3th AF diary for the period 21 June-11 July 44 and found only one mission to Berlin. That was June 21.
"456 of 496 B-17s attack Berlin; 12 other hit targets of opportunity; they claim 16-20-19 Luftwaffe aircraft; 16 B-17s are lost and 216 damaged; 1 airman is KIA, 10 WIA and 148 MIA; escort is provided by 99 P-38s, 95 P-47s and 73 P-51s; they claim 4-0-3 Luftwaffe aircraft; 1 fighter is lost."
http://www.8thafhs.org/combat1944a.htm
I also looked and there wasn't another one until August 1944.
Apparently the image was printed in the Sept 1944 issue of the Army Air Corps confidential Impact magazine
I did a quick search but couldn't find a free scan of it.