A Practical Manual of the Collodion Process, Giving in Detail a Method For Producing Positive and Negative Pictures on Glass and Paper. — PATENT FOR MAKING THE BORDER OF THE PICTURE TRANSPARENT, AND PLACING THE MAT BACK OF THE PICTURE.

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A Practical Manual of the Collodion Process, Giving in Detail a Method For Producing Positive and Negative Pictures on Glass and Paper. PATENT FOR MAKING THE BORDER OF THE PICTURE TRANSPARENT, AND PLACING THE MAT BACK OF THE PICTURE. · ch 19/27

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