list of old-growth forests in the United States

• map of old-growth forests
• list of old-growth forests on Wikipedia

Note that there are a few related but distinct terms:

• virgin forest or first-growth forest — old-growth forest that has never been logged

Some distinguishing factors of old-growth forest, that are relevant to me:

• has large trees and standing dead trees
• multilayered canopies with gaps that result from the deaths of individual trees
• coarse woody debris [1]