In studying the wiki page describing the problem libraries, I see no mention of College Algebra 1. Before downloading and installing the CVS libraries, it would be great to know if many Algebra 1 problems have been created. Can you help?
I'm not sure what your College Algebra 1 covers but in the NPL (National Problem Library) under the Subject "Algebra" it says "There are 3876 matching WeBWorK problem files." So my guess is that you will find a lot of suitable problems there.