Chairman (WDAA)
Checkmate (ADWA)
Chimes
Aero Chombo SA - Mexico - ICAO designator (FAAC)
Canadian Institute for Historical Microreproductions - Source file - UTLAS symbol
Catholic Homesteading Movement (EA)
Chairman
Chamber (AAG)
Champaign, IL - Amtrak rail station code
Champion - NCIC car model code
Champion Spark Plug Co. (SAUO)
Change-over and Change-back Messages (SAUS)
Charleston Museum - South Carolina
Charm - Jewelry (ROG)
Checkmate
Checkpoint Boat Manufacturing Co., Inc., Newton, AL - Manufacturer code for watercraft hull identification number (USCG)
Chemical - Freight
Chemical Machining - Factory automation (BTTJ)
Chemical Milling (SAUS)
Children's Hospital of Michigan
Chimbote - Peru - Airport symbol - Obsolete (OAG)
Chimere Reinoir - NCIC firearms make code (NCIC)
Chimkent - Former USSR - Seismograph station code, US Geological Survey - Closed (SEIS)
Chitimacha - Language code (ETLW)
Choroideremia - Ophthalmology
Christian Homesteading Movement (EA)
CHUM Ltd. - Toronto Stock Exchange symbol
City of Hope Medical Center, Duarte, CA - OCLC symbol (OCLC)
Civilian Hood Mask (SAUS)
Clearing House Mechanism (SAUO)
Cleveland Health Museum (SAUS)
Compound Handling Machine
Congestive Hepatomegaly - Medicine (MELL)
Congregation of Humility of Mary - Roman Catholic women's religious order
Cooperative Hypermedia (SAUS)
Critchfield Marine, Inc. - NCIC boat manufacturer code (NCIC)
Diploma of Choir Master of the Royal College of Organists - British
Specialty Chemical Resources - AMEX symbol (SAG)
Chairman (TBD)
Choirmaster (SAUS)
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