Fill large bowl with cold water and 1 tablespoon lemon juice.
Prepare artichokes as described in “Artichoke Know-How,” placing stems and trimmed artichokes in bowl of lemon water to prevent them from browning.
In deep 12-inch skillet or nonreactive 8-quart Dutch oven or saucepot, heat 1 inch water to boiling over high heat.
Stand artichokes in boiling water; add stems and return to boiling.
Reduce heat to medium-low; cover and simmer 30 to 40 minutes or until knife inserted in bottom of artichoke goes in easily.
Drain artichokes.
Meanwhile, in medium bowl, combine remaining 1 tablespoon lemon juice, mint, fresh and dried bread crumbs, Romano, olive oil, garlic, salt, and pepper.
Preheat oven to 400°F.
When artichokes are cool enough to handle, pull out prickly center leaves from each artichoke; with teaspoon or melon baller, scrape out fuzzy choke (without cutting into heart) and discard.
Finely chop stems; stir into mint mixture.
Stand artichokes on 15½” by 10½” jelly-roll pan, stem sides down.
For each artichoke, pull leaves to open slightly; spoon scant ½ cup mint mixture into center cavity.
Bake 20 to 25 minutes or until stuffing is golden and artichokes are heated through.