Porky Pine

BROWN, C. E., THAYER, T. P., 1966, GEOLOGIC MAP OF THE CANYON CITY QUADRANGLE, NE OR: U. S. GEOLOGICAL SURVEY, MISC. INVEST. MAP I-447.OR DEPT. GEOL. MIN. IND., 1941, OR METAL MINES HANDBOOK: BULLETIN NO. 14-B, CANYON AREA, PAGE 17-39.SWARTLEY, A. M., 1914, ORE DEPOSITS OF NE OR: OR BUREAU MINES AND GEOL., VOLUMN 1, NUMBER 8, CANYON AREA, PAGE 200-209.LINDGREN, W., 1901, THE GOLD BELT OF THE BLUE MOUNTAINS OF OR: 22ND ANNUAL-REPORT, U. S. GEOLOGICAL SURVEY, PART 2, PAGE 551-776.BLM ORMC 31609