ST. LOUIS POST-DISPATCH, March 22, 1937

* Ponce massacre (1st report)
* Puerto Rico - Palm Sunday
* Puerto Rican Nationalist Party

The top of the front page of the editorial section (page 1C) (inside) has a two column heading: "10 KILLED; POLICE FIRE ON PUERTO RICAN NATIONALISTS" with subhead. (see)
Other news, sports and advertisements of the day. Complete with all 32 pages, light toning at the margins, small library stamp within masthead, some small binding holes along the spine, generally very nice.

wikipedia notes: The Ponce Massacre is a violent chapter in the history of Puerto Rico. On March 21, 1937 (Palm Sunday) a march was organized in the southern city of Ponce, Puerto Rico by the Puerto Rican Nationalist Party. The march, organized to commemorate the ending of slavery in Puerto Rico by the governing Spanish National Assembly in 1873, was also formed to protest the incarceration of nationalist leader Pedro Albizu Campos, as well as to demand Puerto Rico's independence from the United States.