The writings of Cappe which appeared during his lifetime were quite slight. In 1783, Cappe printed a pamphlet of
Remarks in Vindication of Dr. Priestley in answer to attacks in
The Monthly Review. and in 1785, he published his sermons.
A Selection of Psalms for Social Worship and
An Alphabetical Explication of some Terms and Phrases in Scripture, the first an anonymous publication, and the second "by a warm well-wisher to the interests of genuine christianity", were printed at York in 1786, and are known to have been compiled by Cappe. The second of them was reissued in Boston, Massachusetts, in 1818. A more elaborate work,
Discourses on the Providence and Government of God, was published by him in 1795; a second edition appeared in 1811, and a third in 1818. After Cappe's death, his widow Catharine collected and edited his discourses, consisting of: •
Critical Remarks on many important Passages of Scripture, 1802, 2 vols. •
Discourses chiefly on Devotional Subjects, 1805 •
Connected History of the Life and Divine Mission of Jesus Christ, 1809 •
Discourses chiefly on Practical Subjects 1815 To the first and second of these publications she prefixed her own memoirs of his life. The second contained an appendix of a sermon on his interment by
William Wood, and a memoir from the
Monthly Review February 1801, pp. 81–4, by
Charles Wellbeloved. ==Family==