When someone asks us how to begin building a collection, the first thing we say is, “Find a budget that makes you comfortable, and buy the pieces that speak to you.” Build YOUR collection, and not one you read about in a book or on a website.
Being with historical documents can be a powerful experience. When you begin with a premise that there is a right way to collect, and only one right way, and ignore the spark within you that fires when you see something you love, you will deprive yourself of the great benefit of building a historically important collection.
Buy what you love and you will always cherish your purchase.