Jeff, I have a useful some useful information --flashcards-- on a link here that is not self-serving; it would be genuinely beneficial to those people wanting to learn Latin via D'Ooge's Latin for Beginners,I believe. I hope that it is alright if I post where they can be searched for, if I do not post a link.
I have been making some electronic flashcards and storing them on flashcardmachine.com, in the flashcard database they have there. If you search under Languages - Latin and Level - Not Applicable, the flashcards are all began with my reference for them DB/LFB/001 for Lesson 1 (DB/LFB/002 for Lesson 2, etc.). All of them are listed as being by Leonidas30, as Leonidas300 wouldn't fit...
I have spent a lot of time on them; they aren't just thrown together, so if any of you have any use for them, you are welcome to use them.
I have not completed the full set, but I intend to do so, so if you're ahead of me, you're just going to have to wait for me to catch up!