 Three other logical treatises follow the Introductiones and the Syncategoremata in the Paris manuscript, which have as a result been tentatively attributed to Sherwood. The first is a treatise on insolubles, ff. 46–54, edited by Roure (1970), and the second a treatise on obligationes found in Paris, Bibl. Nat. 16617. This text was edited by Green (1963), who tentatively attributed it to Sherwood. The third is the text Petitiones Contrariorum, edited by de Rijk (1976), covering puzzles arising from hidden contradictions in sets of premises. Sherwood may also be the author of the Fallaciae magistri Willelmi “Fallacies, of Master William” preserved in British Museum, King’s Library MS 9 E XII, as well as the treatise ascribed to Richard of Sherwood noted above.