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"The Sanborn Services for City Planners" | AF/201954 | 12/31/1960 | ||
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"Sanborn Map, General Index, Portland Oregon" | AF/201953 | 12/31/1965 | ||
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"Sanborn Map, General Index, Portland Oregon" | AF/201952 | 12/31/1970 | ||
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"Description and Utilization of the Sanborn Map" | AF/201951 | 12/31/1949 | ||
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"Sanborn Map, General Index, Portland Oregon" | AF/201950 | 12/31/1933 |