WWPI

WWPI is a student-run, internet-only radio station broadcasting from the Worcester Polytechnic Institute in Worcester, Massachusetts.

Ionion FM

95.8 Ionion FM broadcasts music and news to various parts of southern Greece.  Their Facebook page says they have studios in Athens and Ilia and can also be heard in the cities of Patras, Pyrgos and Zakynthos.  They went on the air in July 1989.

Antenne 1

Antenne 1 is heard on about a dozen frequencies throughout the state of Baden-Würtemmberg in southern Germany.  They went on the air in 1989 from the capital city of Stuttgart and airs a Hot Adult Contemporary format.

WTUL

New Orleans, Louisiana's 91.5 FM WTUL went on the air in 1959 and currently carries an Alternative/Progressive format.  Specialty shows include Country, Jazz, Metal, Classical and Folk as well as the country's longest-running Reggae radio show, Reggae Roots and Branches.  The 1,500-watt station is owned by Tulane University whose students make up most of the staff although some volunteers come from the New Orleans community.

WOBX

"98X" WOBX was an Alternative Rock station licensed to Manteo, North Carolina circa the mid 2000s.

WKXE

95.3 FM WKXE was an eclectic Adult Album Alternative station licensed to White River Junction, Vermont.  They later flipped formats to Soft Adult Contemporary as "Lite 95.3" before changing call letetrs to WSSH in the early 2000s.

WGMD

92.7 FM WGMD is a News/Talk station licensed to Rehoboth Beach, Delaware.

WBZY

WBZY "105.3 FM El Patron" was a Regional Mexican station licensed to Bowdon, Georgia near Atlanta. 

KYAL

1600 AM KYAL played Country music in McKinney, Texas from 1965 until 1976.  The call letters did indeed stand for the southern expression "y'all".

KNOR

1400 AM KNOR went on the air in (K) NORman, Oklahoma in 1949.  A 1994 article from The Oklahoman newspaper says that KNOR's owner was willing to donate the station to the University of Oklahoma.  I can find no evidence that this ever happened.  This OUDAILY article from 1996 says that the station started a show called "The Fringe" playing Alternative Rock on Friday and Saturday nights.  While the show was run by OU students, they were not sponsored by the university.
1400 AM currently airs a Sports format with the call letters KREF.
Obviously, the bottom sticker is suffering from some bad ink issues.

KLTY

94.9 FM KLTY airs a Contemporary Christian format in Arlington/Dallas, Texas.  They were formerly located at 94.1 FM and licensed to Fort Worth, TX.

Covers of two KLTY Now! magazines from 2012 and 2013.

KREX

1100 AM KREX broadcast to Grand Junction, Colorado from 1956 until 1984.  The call letters referred to R.G. "Rex" Howell who had owned the station since 1926.

KLEE / KOTM

1480 AM KLEE went on the air in 1954 in Ottumwa, Iowa.  They currently air an Oldies format and are also heard on translator K299BA at 107.7 FM.  Sister station "Tom FM 97.7" KOTM plays Top-40 music.

KERI

1410 AM KERI is a Religious Teaching station in Bakersfield, California.  These two stickers date to when KERI was located at 1180 AM and licensed to both Wasco and Greenacres, California.

KAUM

KAUM was an Album Rock station in Houston, Texas for most of its history with those call letters.  The 96.5 FM frequency became KAUM in 1971 and by the end of the decade they had drifted towards becoming a Top-40 station.  In 1980 they changed calls to KSRR.

KSSU

KSSU is a student-run, free form station broadcasting from California State University, Sacramento.  They operate legally but without an FCC license because they only broadcast with 3 watts of power.  They have been streaming online since 2005.

CFVR

"Mix 103.7" CFVR is a Hot Adult Contemporary station in Fort McMurray, Alberta.

K238AF

"Latino 95.5" K238AF is a Spanish CHR station licensed to Santa Rosa, California.  They relay the HD2 sub-channel signal of KSXY.

Prior to their current format they played Soft Oldies as "Vintage 95.5".

WAXQ

"Q104.3" WAXQ plays Classic Rock in New York, New York.  They've carried a Rock format since switching from Classical music in 1993.  Two slightly different WAXQ stickers can be seen here. And here.

KADI

KADI was an Album Oriented Rock station in St. Louis, Missouri throughout the 1970s and much of the 1980s.  They were the main competitor to longtime Rock station KSHE.  KADI's call letters reflected the last name of William Cady, the owner at the time the station went on the air in 1959.