<https://www.bladeforums.com/threads/mammoth-gone-wild-ruple-k-r-johnson.1770086/>
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"Here are two very nice mammoth handled folders, a Lanny's Clip by Texan Bill Ruple and a lockback by Keith R. Johnson, a Minnesotan, with engraving by Mississippi's own Joe Mason. Both knives are entirely sole authorship by these esteemed makers..."
<https://bladeforums.com/threads/mammoth-gone-wild-ruple-k-r-johnson.1770086/>