Thanks to Milehigh and PaulH, I now know what kind of oak I have. It is a coastal live oak which was collected by a friend of mine in the Santa Maria area of northern California about 15 years ago. I bought it from him 5 years ago. I repotted it, changed to a new front, and chopped the top off and make an entirely new apex. It grew about a foot this Spring already. I just pruned it back last week. It is 30 in. tall now. Enjoy.