BRYAN, MARGARET. A Compendious System of Astronomy. Stipple-engraved frontispiece portrait of the author and her daughters; 17 folding engraved plates. xxx, [2], 311 pages, including errata leaf with mounted overslip at bottom. 4to, 260x205 mm, 19th-century 1/2 leather, moderate wear, joints partly cracked, covers loosening; offsetting from engraved matter onto facing pages, foxing on verso of portrait and several other plates, portrait reinforced in gutter on verso, contents otherwise generally clean, extraneous 19th-century astronomical wood engravings mounted on front flyleaf. Booklabel and armorial bookplate of Sir David William Smith (1764-1837), Surveyor General of Upper Canada. London: Printed for the Author, and sold by Leigh and Sotheby, and G. Kearsley, 1797