Die Gebilde ersten und zweiten Grades der liniengeometrie in synthetischer Behandlung.

Available on demand as hard copy or computer file from Cornell University Library.

The modern preceptor or a general course of education : containing introductory treatises on language, arithmetic, bookkeeping, algebra, geometry, geography, astronomy, chronology, navigation, drawing, painting, &c., agriculture, geology, moral philosophy : for the use of schools /

Mode of access: Internet.

An introductory account of certain modern ideas and methods in plane analytical geometry,

Mode of access: Internet.