CHICAGO DAILY TRIBUNE, April 22, 1929

* First mid-air airplanes collision in the U.S.
* Military fighter & air liner over San Diego

The front page has a banner headline: "6 DIE IN CRASH 2,000 FEET UP" with subhead. Nice for display. Related photo and heading on the back page.
Complete with 42 pages, rag edition in great condition.

wikipedia notes: A United States Army Air Corps Boeing PW-9D fighter, 28-037, performing stunts over San Diego, California, attempts to pass in front of the Maddux Air Lines Ford 5-AT-B Trimotor NC9636, which is on a scheduled passenger flight from San Diego to Phoenix, Arizona. The PW-9D strikes the Trimotor's cockpit, and both aircraft crash, killing the PW-9D pilot and all five people aboard the airliner.