Euler introduced the term affine (Latin affinis, "related") in 1748 in his book "Introductio in analysin infinitorum."

Felix Klein's Erlangen program recognized affine geometry as a generalization of Euclidean geometry.

Cosmographiae Introductio was created in 1507.

Bonaventura Mariani has written:

'Introductio in Libros Sacros Novi Testamenti'

J. Keill has written:

'Introductioad veram astronomiam'

'Introductio ad veram physicam'

Ubaldo Ubaldi has written:

'Introductio in Sacram Scripturam' -- subject(s): Accessible book