| http://www.w3.org/ns/prov#value | - This was a service offered by most studios, and in 1877 Winter started including the words, ???ALL NEGATIVES PRESERVED,??? in addition to the more general, ???This or any other Portrait enlarged on the premises ?????? Perhaps only those studios which had been established for any length of time could make good on their promise, as the glass-plate negatives were bulky and delicate, requiring substan
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