There are over 150 Books of Lists produced by business journals, and hundreds more industry lists and rankings produced by other publishers across the United States. From New York to LA, from Florida to Charlotte, this site is your portal to finding more ranked lists than any other resource in the world.

BOL Research: PA Business Central Collecting Data

PA Business Central is collecting data for its 2011 Book of Lists.  See more info here:

PA Business Central (PBC) collects data through a variety of means; it appears that PBC asks participants to check the printed Book of Lists, and then inform PBC via e-mail if there are any changes or corrections for the yearly update. For new companies that haven't appeared on the lists, they ask company contacts to send a survey request, to which PBC then responds with a faxed or e-mailed survey form.

It also sounds like the PBC Book of Lists project is a fairly grueling endeavor, which is the case in most markets. In PBC's own words:

"As you might expect, this issue is heavily labor intensive and requires careful collection, input and editing of a large number of facts, figures, numbers and names."
Book of Lists is a valuable resource in any market. I salute PBC for its investment in the time and labor required to produce this data rich compilation of company information.