Ongoing White Board Animator

I need a white board animator on a regular basis to help me do videos for clients. I don't want animated videos with cartoon characters, unless you can see the "hand" drawing the animation and story line. I have script writers and voice over talents, but I need a white board animator. I know some folks do it without their hand actually drawing and writing, but it's merely multiple pictures of the hand in multiple angles to achieve the look - that's fine by me. I will need someone available to do a few videos a month and I'm not stuck on just 1 provider. I can use more than 1, so submit your queries for full review. Thank you.