A defence of itinerant and field preaching a sermon, preached before the Society for Gratis Sabbath Schools, on the 24th of December 1797, In Lady Glenorchy's Chapel, Edinburgh. By Greville Ewing, Minister of the Gospel - Ewing, Greville 1767-1841 (printed by J. Ritchie. Sold by J. Ogle, J. Guthrie, and G. Panton, G. Peattie, Leith, M. Ogle, Glasgow; and R. Ogle, Gray's Inn Lane, Holborn, London, 1799)