Horkheimer’s named collaborations often consisted only of marginal notes and suggested edits.

Evidence

Adorno’s essay on `The Relation between Sociology and Psychology’, which opened Sociologica, was dedicated to Horkheimer and had originally been intended as a joint contribution by Adorno and Horkheimer to the first issue of the journal. Horkheimer’s collaboration did not, however, extend beyond a few notes and suggested changes. — Rolf Wiggershaus, The Frankfurt School, 494

Categorization

• XREF: connects to: Eclipse of Reason appeared under Horkheimer’s name alone despite being joint work. — Rolf Wiggershaus, The Frankfurt School: Its History,…, 369; Horkheimer’s postwar academic output largely consisted of Adorno-drafted occasional pieces. — Rolf Wiggershaus, The Frankfurt School: Its History,…, 1910
• yield-rescued: below the book’s yield-target cutoff, included anyway for connecting to: Eclipse of Reason appeared under Horkheimer’s name alone despite being joint work. — Rolf Wiggershaus, The Frankfurt School: Its History,…, 369; Horkheimer’s postwar academic output largely consisted of Adorno-drafted occasional pieces. — Rolf Wiggershaus, The Frankfurt School: Its History,…, 1910