LaFleur's Lottery World is
an industry magazine that maintains much information about U.S.
lotteries (sales, number of employees, number of retailers, where
the money goes, etc.).
International Gaming & Wagering Business - another gaming
industry magazine.
Public Gaming Research
Institute Magazine - PGRI sponsors conferences, trade shows and
publishes research for the lottery industries around the world.
NASPL is the North American
Association of State and Provincial Lotteries. It has a wealth of
information about U.S. and Canadian lotteries including lottery
revenues, where the money goes, compulsive gambling issues, history
of the lottery, lottery terms and much more.