1968-1971[]
1971-1990[]
1971-1975 (primary), 1975-1990 (secondary)[]
This simple logo was used until 1975 in print, but was used on storefront signs until 1990.
1975-1976[]
1976-1978[]
1978-1981[]
1981-1988[]
1988-1990[]
1990-2008[]
2008-2015[]
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