Posted By:
Pat NesterMax,
I am not positive how many "lessons" were in the series but about 9 years ago I purchased lessons 1 through 7 on ebay. So there is at least seven. Each booklet has the same cover design except they are in different colors such as yellow, red, green, purple, etc. They have great pictures inside of various players and I had one that had pictures of Joe Jackson. I traded them for some other cubs items about 5 years ago. I have seen some others over the years on ebay. They almost always have a vertical crease because they were folded in half to fit in the envelope you show.