Thanks for the recommendations! Unfortunately, no Fr. Cekada or Fr. Coomaraswamy books seem to be on there 
No, these days, I don't think you're going to see TAN selling titles by either of those two authors.
We use TAN for the
Baltimore Catechism #3 in homeschool (which my son just got completed, he got an 81% B-minus on the final, could have been better, but still a decent grade per traditional grading standards) and
The Story of Civilization series by Phillip Campbell. In all honesty, the final volume of that series, on US history, is kind of puerile, and I've had to supplement it with other material, including Dr Frank Freidel's
American History in the Twentieth Century, which I used in my senior year of undergraduate school.