Online - 100 lbs is a lot to ship, but there are on-line stores you can order from. Chocosphere has one of the broadest selections, but it's in Oregon so shipping to you is going to be most expensive. So going ...
There should be a bakery supply company in your area. They will usually carry a number of different chocolate brands, most likely the more commercial brands. They may or may not require you to set up an account, but the ones in my area will sell to just about anyone.
If you have a friend in a restaurant (or bakery) who orders through Sysco, UNFI, or another major distributor they also carry major brands and you might be able to get them to include the chocolate you want in their next order. You'll get good prices and shipping should be free.
If you're looking for a particular brand, e.g., Valrhona, Domori, Callebaut, Guittard, look up the company web site for their local distributor or call the 800# to find out who sells it locally.
clay - http://www.thechocolatelife.com/clay/