Portland Gold Mining Company

http://www.worldcat.org/oclc/50001668

http://www.worldcat.org/oclc/50011083

http://www.worldcat.org/oclc/50014484

http://www.worldcat.org/oclc/57313081

http://www.worldcat.org/oclc/35040063

http://www.worldcat.org/oclc/702159740

http://www.worldcat.org/oclc/50011102

http://www.worldcat.org/oclc/84926786

http://www.worldcat.org/oclc/81960643

http://www.worldcat.org/oclc/35070326

http://www.worldcat.org/oclc/50011095

http://www.worldcat.org/oclc/702159800

http://www.worldcat.org/oclc/56430421

http://www.worldcat.org/oclc/35070330

http://www.worldcat.org/oclc/696796209

http://www.worldcat.org/oclc/35019325

http://viaf.org/viaf/149072039

http://www.worldcat.org/oclc/701875700