You need trees for a lumbermill, but these are the NECESSARY things right now.
-Power (To fuel the zones)
-Water and water pipes
Now, I can build an industrial zone, and I will, but it won't be useful without roads, power, or water, now would it?
Power available in this time:
-Oil (More money, less polluting, and outputs more power.)
-Coal (Cheaper, pollutant, outputs SLIGHTLY less power.)