What does MLK stand for?

3 Series of X-ray Lines - Medicine (EDAA)

Malakote - Language code (ETLW)

Malta, MT - Location identifier - FAA (FAAL)

Martin Luther King, Jr.

Matlack Systems - NYSE symbol

Matlack Systems, Inc. - NYSE symbol (CTT)

Michael Lenhart Kaiserslautern - Automotive parts

Milford - Kansas - Seismograph station code, US Geological Survey (SEIS)

Models Inc., Fern Park, FL - Manufacturer code for watercraft hull identification number (USCG)

Moses Lake, WA - Amtrak Busline code