Originally Posted by easy-lift guy
The above a Two suggestions would be fine. You may also want to contact a local chapter of the ISA OR the TCIA. Either of which will steer you in the right direction. All the best.
I've looked on the TCIA website and will investigate further. Not seeing too much information for the northern Illinois region. I know Asplundh has a huge market around here and they know how to climb. It's all about finding the right people to network with I suppose.