Listings include organizations, headquarters, and number of attendees expected, as estimated by the Toledo-Lucas County Convention & Visitors Bureau:
Today-Friday Potash Corp., Toledo Riverfront Hotel, 65, regional.
Today-Thursday Health Care Retirement, Toledo Riverfront, 25, national.
Friday-Sunday Suburban Girls Softball Tournament, Hilton Hotel Toledo, 2,000, regional.
Sunday-June 11 Vector Marketing, Park Inn Hotel, 1,000, regional.
Sunday-June 13 County Commissioners Association of Ohio, Park Inn Hotel, 300, state.