https://cha.com/about-us/cha-history/
CHA History | Colorado Hospital Association
CHA History July 1921 The first meeting to discuss the interest in organizing a Colorado state hospital association took place on July 26, 1921 at the
cha historycoloradohospitalassociation
https://researchers.mq.edu.au/en/prizes/canadian-business-history-association-panel-sponsorship-cha-confe/
Canadian Business History Association panel sponsorship CHA conference - Macquarie University
canadian businesshistoryassociationpanelsponsorship