1
by Wright, Gabriel
Published 1785
printed for Gregory and Wright, mathematical instrument makers, near the India House, Leadenhall-Street

2
by Wright, Gabriel
Published 1779
Printed for the author, no. 36, Little Britain; and sold by Mr. Martin, optician in Fleet-street, and the booksellers in town and country

3
by Wright, Gabriel
Published 1781
printed for the author