I.F. Stewart A Small Private Bird Observatory Ornithology TDGNHAS Series III, 31 (1952-53), 137(WARNING very large file size: 58.72 MB)
I.F. Stewart The Wintering of the Lesser Black-Backed Gull in Dumfries Ornithology TDGNHAS Series III, 32 (1953-54), 110(WARNING very large file size: 26.11 MB)
I.F. Stewart Aviculture and Ornithology - The History of a Reed Bunting. Ornithology TDGNHAS Series III, 33 (1954-55), 73(WARNING very large file size: 20.98 MB)
