Blackall, O. (1709). The rules and measures of alms-giving, and the manifold advantages of charity-schools: A sermon preach'd at St. Peter's in Exeter, September the 26th, 1708. ... By Ofspring, Lord Bishop of Exon. To which is added, his letter to the clergy of his diocess, upon the same subject. printed and sold by Henry Hills.

Blackall, Offspring. The Rules and Measures of Alms-giving, and the Manifold Advantages of Charity-schools: A Sermon Preach'd at St. Peter's in Exeter, September the 26th, 1708. ... By Ofspring, Lord Bishop of Exon. To Which Is Added, His Letter to the Clergy of His Diocess, upon the Same Subject. printed and sold by Henry Hills, 1709.