Statistics for occurrence #1 of “Matthew Roberton” in chapter 14 of Medford Historical Society Papers, Volume 15.:

...$4 in gold, and the estimate is at present $50 per ton, with copper in large proportions both in sulphide and oxide. The ore is taken to the smelting works in East Boston. About a mile northeast, Matthew Roberton has discovered silver, which is supposed to be an outcropping from the same vein. On October 15 appears— That silver mine at Spot Pond is progressing favorably. The shaft has been ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Matthew Roberton 2 2 0 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.