Elementary Catechism on the Constitution of the United State
Archive.org has a copy here:
http://www.archive.org/details/elementarycatech00stanrich
Edit: another etext - http://www.constitution.org/cmt/stansbury/elementary_catechism_on_the_constitution.pdf
http://www.archive.org/details/elementarycatech00stanrich
Edit: another etext - http://www.constitution.org/cmt/stansbury/elementary_catechism_on_the_constitution.pdf