International Butler Academy

Offers training programs for butlers, household managers, and personal assistants.
http://www.butlerschool.com/

Starkey International Institute for Household Management

Offers training and placement of service experts in household and estate management positions.
http://www.starkeyintl.com/

International Household Manager

Information on household managers, estate managers, majordomos, butlers, executive housekeepers, personal assistants.
http://www.geocities.com/householdmanagerinformation

Professional Domestic Services & Institute

A training facility and placement agency for household service staff, including household managers, personal assistants, and butlers. Located in Columbus, Ohio.
http://www.housestaff.net