Positive Reasons for Publishing Negative Findings
Connor, Jason T.
American Journal of Gastroenterology 2008 September; 103(9): 2181-2183
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Washington, DC St Alyosius Church Negative of Old Altar Piece Orig negative taken in St Aloysius Church Feb 18, 1886 Orig negative cracked - This one made from old glass positive Brosnan, Rev. John, S.J. (1886)View of painting with priest giving communion to royalty