St Martin-in-the-Fields; London: Elevation and Section; Print made by John Le Keux; 1783-1846; British; after unknown artist; undated; Etching and line engraving on slightly textured; moderately thick; cream wove paper; Image: 7 x 4 3/4 inches (17.8 x 12.1 cm); Sheet: 11 3/4 x 8 3/4 inches (29.8 x 22.2 cm); and Plate: 8 x 6 inches (20.3 x 15.2 cm); architectural subject