Forget that catechism; I have. I've decided to go back to a project I started in 1999: getting online the youth-geared and now public-domain biography of John Murray, entitled The Cornerstone.
I scanned it then, and have had it online since, but it isn't proofed. That'll come next. Because it is a book, I'll not be posting the chapters on the blog, but will point to where you can read it.