Unity and identity of opposites in calculus and physics. - F. William Lawvere (Appl. Categorical Struct., 1996)

Conceptual mathematics - a first introduction to categories. - F. William Lawvere; Stephen H. Schanuel (Cambridge University Press, 1997)

Foundations and applications: axiomatization and education. - F. William Lawvere (Bull. Symb. Log., 2003)

Left and right adjoint operations on spaces and data types. - F. William Lawvere (Theor. Comput. Sci., 2004)