This definition appears very rarely
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Samples in periodicals archive:
In addition, major private-sector ACH operators--the American Clearing House Association, the New York Automated Clearing House, and Visa USA--have reported that their computer systems are Year 2000 ready.
In 1975, Lee assisted in the development of the New York Automated Clearing House, which handles ACH transactions in that region.
The Clearing House also runs the New York Automated Clearing House (NYACH), which processes payments electronically among domestic financial institutions in New York, northern New Jersey, Puerto Rico, and the U.