Lenin, V. I. The Struggle Against Reactionary Philosophy: A Collection Based on Lenin (Borba s reaktsionnoy filosofiyey: Sbornik po Leninu), 1926. In Russian.

В. И. Ленин.
Борьба с реакционной философией: Сборник по Ленину.
Вступительная статья и примечания Г. К. Баммеля.
Москва-Ленинград: Государственное издательство, 1926.
404 с. ; 24 см. Мягкая издательская обложка.
Тираж 5000 экз.
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V. I. Lenin.
The Struggle Against Reactionary Philosophy: A Collection Based on Lenin.
Introductory article and notes by G. K. Bammel.
Moscow-Leningrad: Gosudarstvennoye Izdatelstvo, 1926.
404 pp. ; 24 cm. Softcover.
Edition of 5,000 copies.

This substantial 1926 anthology represents a definitive effort during the mid-1920s to systematize Vladimir Lenin’s philosophical heritage as a weapon for contemporary ideological battles. The text provides a deep dive into the internal logic of Lenin's defense of dialectical materialism, including the arrangement of his polemics against Machism, neo-Kantianism, and various "reactionary" idealist currents that surfaced within the revolutionary movement. Compiled and annotated by Grigory Bammel—a prominent Soviet philosopher and victim of the later purges—this volume serves as a vital primary source for understanding the early Soviet transition from revolutionary agitation to institutionalized Marxist-Leninist orthodoxy. It captures the exact moment when Lenin's critiques were being transformed into a rigid methodological framework for all scientific and philosophical inquiry in the USSR.