A hand-knit wool sweater for guitar lessons. Firewood for baby-sitting services. Chocolate chip cookies for snowplowing a driveway. The Yankee tradition of bartering is alive and well in Maine. We just need people in Androscoggin, Franklin and Oxford counties to share some examples with us. If you have some, please send an e-mail to [email protected] or a brief note to Ursula Albert, features editor, Sun Journal, 104 Park St., Lewiston, 04240, by Friday, Jan. 27.