Description of a forty-feet reflecting telescope. By William Herschel, LL.D. F.R.S. From The philosophical transactions.

[London, 1795]

65,[1]p., 19 plates ; 40.

ESTC N6196

Electronic reproduction. Farmington Hills, Mich. : Thomson Gale, 2003. (Eighteenth century collections online). Available via the World Wide Web. Access limited by licensing agreements.