Emerald Expositions has closed a deal for George Little Management LLC for $335 million.

White Plains, N.Y.-based George Little operates about 25 business-to-business trade shows in the U.S., including Armory Antique Show, Las Vegas Antique Jewelry and Watch Show and the Surf Expo.

Emerald, headquartered in San Juan Capistrano, Calif., also operates business-to-business trade shows in the U.S., producing about 85 tradeshows and conferences per year.

Emerald is a subsidiary of Toronto private equity firm Onex Corp. (TSX: OCX), which invested $140 million from a fund, Onex Partners III, for the deal. The balance of the purchase price was funded by Emerald with debt. Onex has about $16 billion in assets under management.