A Wall Street sign in front of the New York...

A Wall Street sign in front of the New York Stock Exchange on April 22, 2010. Credit: AP / Mark Lennihan

While the ranks are thinning when it comes to Long Island-based public companies, there still remain a few dozen firms that are running their operations on local soil.

But do you know what they make or do?

Let's find out.

Take our quiz above and test your knowledge of these 10 local companies.

NewsdayTV's Doug Geed visits two wineries and a fish market, and then it's time for holiday cheer, with a visit to a bakery and poinsettia greenhouses. Credit: Randee Dadonna

Out East with Doug Geed: Wine harvests, a fish market, baked treats and poinsettias NewsdayTV's Doug Geed visits two wineries and a fish market, and then it's time for holiday cheer, with a visit to a bakery and poinsettia greenhouses.

NewsdayTV's Doug Geed visits two wineries and a fish market, and then it's time for holiday cheer, with a visit to a bakery and poinsettia greenhouses. Credit: Randee Dadonna

Out East with Doug Geed: Wine harvests, a fish market, baked treats and poinsettias NewsdayTV's Doug Geed visits two wineries and a fish market, and then it's time for holiday cheer, with a visit to a bakery and poinsettia greenhouses.

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