EarlyCopperCoins.com
Run by Shawn Yancey, one of my favorite copper dealers. Always has a nice assortment of Large Cents for sale at reasonable prices.
Early Cents (Chris Victor-McCawley)
One of the top copper dealers in the country. Excellent site consisting of early copper from Colonials, Half Cents (1793 - 1857), Large Cents (1793 - 1857), and tokens. Complete with photos of all coins.
H. Craig Hamling Rare Coins
H. Craig Hamling's fixed price list (one of my favorite copper dealers.) Contains mostly large cents, with some other early copper and a few odds and ends. Very professional site with excellent photos of all coins in inventory.