Humayun's Tomb, by a Delhi draughtsman, 1787-90. The tomb of Humayun was built between 1562 and 1571 by two architects from Herat, Sayyid Muhammad and his father Mirak Sayyid Ghiyath. The drawing is one of two of Delhi monuments collected 1787-90 by Lieut. William Strewart. The buildings are treated as isolated elevations against a blank ground, but are also concerned with perspective and the effects of light and shade. Strewart was a draughtsman and surveyor and would seem to have influenced the local draughtsmen to modify their style.