PORTLAND PAPERS. Vol. CCCLII (29/396). Letters to Gregg from Patrick Lyell, etc.; circa 1700-1707. Patrick Lyell, at Elsinore: Letters to W. Gregg: circa 1700-1707.
PORTLAND PAPERS. Vol. CCCLVII (29/401, 402). 1. (29/401). Letters to Gregg, mostly from his family. 2. (29/402). Papers, etc., relating to his trial and execution.