A Topic of Moral Theology
Lawfulness of Immediate Cooperation
Lawfulness of Immediate Cooperation, as treated in McHugh–Callan (Art. 9. The Sins Against Beneficence).
In the index as Cooperation in Sin
In the manuals
Moral Theology: A Complete Course (McHugh & Callan)
Vol. I, Pt. II, Q. I, Art. 9. The Sins Against B…, Lawfulness of Immediate Cooperation, nn. 1526 & 1527 (2 passages — hover a number to read it)
Treated under the broader heading Formal and material co-operation — Slater, Manual of Moral Theology · Bucceroni, Moral Enchiridion · Bucceroni, Moral Enchiridion (4th ed., 1905) · Bucceroni, Cases of Conscience · Koch–Preuss · Merkelbach, Pastoral Questions · Slater, Cases I · The Casuist — these works do not divide the matter as finely as we do here, so their treatment stands one heading up (ed.)