Leon Trotsky's contributions to the journal Bor'ba, published in St Petersburg between February and July 1914, have been overlooked in scholarly accounts of his biography. This paper has two aims. First, to provide an exposition of Trotsky's contributions to this journal; and, second, to explain why they have been forgotten. Three explanations are offered. First, Trotsky biographers look to Deutscher's trilogy for the main events in Trotsky's life, and he does not mention Bor'ba. Second, Trotsky himself did not refer to his work for the journal in his autobiography My Life. Finally, Stalin did not use Lenin's critique of Trotsky's participation in Bor'ba as further ammunition against Trotsky in the power struggle after Lenin's death.