A Baptist Catechism – an adaptation of the 1677 Baptism Catechism, also known as "Keach's Catechism"
Benjamin Beddome, A Scriptural Exposition of the Baptist Catechism (1776; reprint, Solid Ground Christian Books: 2006). The text is available at Google Books.
"I am persuaded that the use of a good Catechism in all our families will be a great safeguard against the increasing errors of the times, and therefore I have compiled this little manual from the Westminster Assembly's and Baptist Catechisms, for the use of my own church and congregation. Those who use it in their families or classes must labour to explain the sense; but the words should be carefully learned by heart, for they will be understood better as years pass." - From the Preface
Joel Beeke has a brief post on catechetical evangelism in the Puritan tradition.