Related Clues:

• Stamp on a package
• See 21-Across
• New England catch
• Drop a line?
• Seafood selection
• A part of this starts 17-, 30-, 48- and 63-Across
• Letters on a package
• One way to buy
• Party buffet favorite
• North Atlantic fish
• Fashionable Cape
• Catch a few rays?
• Aquatic animal
• Massachusetts cape
• See 70-Across