I have purchased a 1903 Springfield rifle at an auction. Upon examination it has an inspectors mark OGEK in a rectangle.  Mt Brophy's springfield book lists those initials as Odgen Arsenal - Elmer Keith.  I am of course looking for info. Did Elmer work at the arsenal? What years? Where is Odgen arsenal? I feel I have a real gem here being that it was handled by Elmer who inspected and maybe even retrofitted it. Would appreciate any info available or what channels I could use to obtain the answers.