WARX

The WARX call letters existed in Hagerstown, Maryland from 1985 until 2005.  Formats during that time included Adult Contemporary, Oldies and Classic Hits.  I have no idea what they programmed while branded as "107 ARX"
UPDATE:  See comments

KTOB

KTOB 1490 AM 'La Vaquera" ("The Cowgirl") was a Regional Mexican station licensed to Petaluma, California.  The KTOB call letters existed there for over 50 years (1961-2014).
 

KPGE

1340 AM KPGE is a Country station licensed to (K) PaGE, Arizona.  The current owner is retiring and unless a new one is found they will be to going off the air permanently at the end of this year.
 

KLMA

96.5 FM KLMA airs a Spanish Variety format in Hobbs, New Mexico.  They began broadcasting in November 1993.
 

Boost Radio

Boost Radio airs a Christian Rhythmic CHR format on a dozen stations and translators in six markets.  They are based in St. Louis, Missouri and went on the air in 2021.

W225AP - Saint Paul, Minnesota

KXBS - Bethalto, Illinois / St. Louis, Missouri

W247BS - Hope Mills, North Carolina

W248BB - Chicago, Illinois

W250CY - Pittsburgh, Pennsylvania

K279BO - Portland, Oregon
 

KPVR - Bowling Green, Missouri

WBAL

1090 AM WBAL is a 50,000-watt, clear-channel station broadcasting from Baltimore, Maryland.  They've been on the air on different frequencies since November 1925.  After years as a full-service MOR and later Adult Contemporary outlet, WBAL switched to News/Talk in the mid-1980s.  They've been the flagship station of the Baltimore Orioles for most of their seasons since the team came into existence in 1954.  In 2021 WBAL added a translator heard on 101.5 FM. 

KDOK

1240 AM KDOK plays Classic Hits in Longview, Texas.  They are now also heard on four FM translators.  A sticker from KDOK's days at 92.1 FM can be seen here.
 

CKOY? CHYK?

I'm not sure if this sticker is from CHYK or their previous call letters CKOY.  Either way 104.1 FM "La Radio Rock Relaxe" played French-language music in Timmins, Ontario.
 

WPVQ

"Bear Country 95.3" WPVQ broadcasts from Greenfield, Massachusetts.  They were located at 93.9 FM until 2001.
 

KCLS

600 AM KCLS was on the air in Flagstaff, Arizona from 1950 until 1988.  Much of its time on the air was spent as an MOR/Adult Contemporary with a long tradition of local news.  At one time they also broadcast for one hour each day in the Navajo language.

WFLR

1570 AM WFLR (W Finger Lakes Radio) went on the air in October 1956 from Dundee, New York.  They currently air local news and Country music on their original frequency along with three FM translators.  95.9 FM WFLR began broadcasting in August 1968 but seems to have gone away some time in the 2000s.
 

CFM 101.2

101.2 CFM broadcasts from Montauban, France.  They have been on the air for over 30 years and were originally known as "Radio Caylus".
 

Capital Gold 1548 AM

London, England's Capital Gold went on the air with an Oldies format in 1988.  A series of mergers including one with the Classic Gold digital network in 2007 resulted in what is now simply branded as "Gold."

WYST

"Star 97" WYST was an Oldies/Classic Hits station in Detroit, Michigan from 1994 to 1997. 
 

WRSM

1540 AM WRSM began broadcasting around 1980 and was licensed to Sumiton, Alabama.  A years-long legal dispute eventually took them off the air.  The FCC officially canceled their license in 2019 by which time they had the call letters WKDG.
 

WOKH

96.7 FM WOKH went on the air from Bardstown, Kentucky in October 1979.  Some time in the early 2000s they changed call letters to WTHX and later brought back the WOKH calls along with a move to 102.7 FM.  They are currently an Adult Contemporary station branded as "102.7 The Rocket."
 

WGOL

A 1983 decal from 98.3 FM WGOL in Lynchburg, Virginia.  These call letters existed there from 1970 until 1997.  A Broadcasting Yearbook from the early 80s lists WGOL as having a "Stereo Rock" format.
 

KYNG

105.3 FM KYNG played Country music in Dallas, Texas from 1992 until 2000. 

KSGI

A 1991 decal from 1450 AM KSGI licensed to St. George, Utah.  A Broadcasting Yearbook from around this time lists them as having had an Adult Contemporary/MOR format.  They were on the air from 1988 to 1998.  Utah's Dixie is located in the southwestern part of the state and includes the Dixie National forest and a small part of the Mojave Desert.
 

KGVM

95.9 FM KGVM (K Gallatin Valley Montana) is a non-commercial community radio station in Bozeman, Montana.  The 3,500-watt, all-volunteer outlet went on the air in May 2018.