pen and green ink, purple wash and pencil, ruled for transfer
Measurements
44.4 × 30.5 cm (image) 47.0 × 33.3 cm (sheet)
Inscription
inscribed in pen and ink (in image) u.r.: O'Brien. inscibed in red pencil on reverse l.l.: 4 (in a circle) inscribed in black pencil on reverse c.: 1 (in a circle) inscribed in red pencil u.l.-u.r.: (1 to 9, matching ruled, vertical lines) inscribed in red pencil u.r.-l.r.: (A-I, matching ruled horizontal lines)
