Your attention is directed to ARMAX - The Journal of the Winchester Arms Museum, Volume II, No. 1 - 1988 in an Article titled "The Percussion Martial Longarms of Eli Whitney, Jr. by Howard Michael Madaus. P15 describes an"OHIO" branded Type IA or B M1841 US Rifle (Mississippi) and refers to the transfers of a large quantity of arms owned by the Federal Government and held in storage at the State of Ohio Depot in Columbus, that were transfered to State Ownership on 24 September 1863 Foot note 11 on pp69 and 70 reference where the issues are recorded in federal accouts and on p613 or the Annual Report of athe Quartermaster-General of Ohio for the year 1863. footnote 12 p70 of armax "2 stamps'OHIO"" first appear in the inventory of materials and tools on hand at the state arsenal dated 15 November 1864 in the Annual Report of the Issues to the Militia. I have seen US1841 Rifles, Enfields P1857, Postdam Muskets, Brazilian Minie rifles, US M1816 Type II Muskets with cone in barrel conversions all with athe same "OHIO" brand - as well as an artillery valiese saddle stamped on both skirts. Obviously the reequipage of Ohio Militia starting in fall of 1863 motivated the State to buy two stamps to identify its property (from that os US Govt property) stored in the same Depot at the same time. I have never seen any post Civil war ordnance material stamped with that OHIO stamp.
If you dig out the Ohio Annual report of the QMG for 1863 you for the listing of arms transfered you will have a complete check list of the differnet types originally so marked. My opinion is that the Federally owned weapons were guns turned in by Ohio Volunteer units at discharge from federal service in Columbus Ohio, that had not been reissued (like most Springfield Rifled Muskets would be) to newly ordanized Ohio volumteer units mustering into federal Service in Columbus - leaving an assortment of the "first call" weapons origianlly issued in 1861 and perhaps 1863 9 months and one year units. yours, bob anderson
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