http://www.southernmusic.com/bestsellers/trumpet.htm
A little bit more about Mitchell and why I think it is the best book to get.
First it is under 10 bucks, for a student just starting off spending $40+ on a Schlossberg, Clarke and Arban’s so they can use one page or so from each isn’t cool.
Mitchell is divided into lessons with each lesson being 3 or 4 pages. The lessons cover long tones,intervals, scales, melodies, articulation studies, etc... Everything they need to work on.
Each lesson covers a wide variety of keys, I had 6th grade students playing in G flat, B, etc... And thinking nothing of it.
Each lesson is progressive and gets a little higher with the long tone series.
Each lesson can be done in about 20 minutes of practice, a doable amount for a young kid.
It is also very easy for the student to see their progress by looking back to past lesson.
each page has a quote about some aspect of trumpet playing, those alone are worth the cost of the book.
The list goes on, but I will stop here.