VaCollector,
You have a wonderful collection of firearms. You have been given some great advice on how to liquidate. There are a number I would love to own as many others on this board have also stated.
While there are many dealers and auction houses to chose from, picking one or two is not easy. One way to educate yourself and to meet a number of these people would be to attend a prominent gun show such as the Antique Arms show in Las Vegas. It starts Jauary 18th and runs for three days. You would find many examples similar to yours and can get an idea of what the asking price is (sometimes much different than the selling price). You could ask all the questions you wanted and see and feel the enthusiasm of the crowd. You may even change your mind and want to keep your collection! Good luck on whatever direction you go. Keep us posted.
Chris