Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym 61S is...

61S is

  • Cottage Grove State Airport, Cottage Grove, Oregon USA

61S is also in:

Acronym Definition Searched: POD JFK WVOL WTEL 84773 BRAD MRDS AALA HEFCE COLA 76564 ACF 50201 NLE TSU