Even for the rich history of sectarian U.S. esoterica, this is a standout. A split from the RWL led by Karl Mienov whose unique selling point was that the Spanish Civil War was an inter-imperialist conflict they took no side in.

Spark (Marxist Workers League). Vol. 1 No. 1. February, 1938.

Contents: The Imperialist War In Spain by Karl Mienov, On Revolutionary Defeatism by K. M., Vargas- Puppet of American Imperialism by Sid Stanford, A Split From Weisbordism by Bob Golden, Draft Program of Marxist Workers League, Statement of Resignation from Trotskyists by William Spencer, Statement of Resignation from the Oehlerites by Tom Marat, A Letter Fromi Mexico by P. Eiffel, The Democratic Dictatorship by Harry Gordon, Against the Democratic Dictatorship by Steering Committee of Marxist Workers League

Spark was the journal of the Marxist Workers League, a split from the Revolutionary Workers League led by Karl Mienov. Mienov held that the Spanish Civil War was an inter-imperialist war and joined with other small forces to form the M.W.L. in early 1938. Published in New York Spark lasted from February, 1938 until May, 1939 when it was replaced by ‘Power.’ The M.W.L. and the small Revolutionary Marxist League united in 1940 to form the short-lived Workers Party.

PDF of full issue: https://archive.org/download/TheSpark/MWL2_text.pdf