I sure you know that the 7th Michigan Volunteer Regiment was formed from the following units; Union Guard" of Port Huron, the "Curtenius Guard" of Mason, the "Jonesville Light Guard" of Jonesville, the "Monroe Light Guard" of Monroe, the "Tuscola Volunteers" of Tuscola, the "Blair Guards" of Farmington, the "Lapeer Guards" of Lapeer, one company from Pontiac, the "Prairieville Rangers" of Prairieville and the "Burr Oak Rangers" from Burr Oak. To the best of my knowledge none of these units except the Monroe Light Guard existed before the Civil War. I have never seen any information that any company except the Monroe Light Guard had uniforms prior to being issued state uniforms. At the outbreak of the Civil War Michiganís state authorities ordered that uniforms should immediately be made up of blue flannel or some other suitable material blue in color. The 7th should have recieved these uniforms. Is it possible that the State of Michigan had some uniforms made in gray? The uniform of the Monroe Light Guard is shown on plate D in Philip Katcherís American Civil War Armies (4) State Troops and I am sure you have seen this. Several sources describe the state issue blue uniform and the uniform they describe is almost identical to the Monroe company uniiform except in blue. Do you think it is possible that the whole regiment obtained the uniforms worn by the Monroe Light Guard? Some how got the State of Michigan to repace the normal bule cloth with gray?
A good starting point would be to research the Civil War photographs at the Burton History Collecttion of the Detroit Public Library, the Bentley Library of the Unifversity of Michigan and the State Archives of Michigan in Lansing.
I hope this helps a little.
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