Hi, Dan. Nice photos! The major correction I would offer is that you have some of the quarries mixed up. Your "Pine Tree Quarry" is actually the Eureka Quarry, and your two-part "Eastern Quarry" is actually the Imperial (or Underground) Quarry (nearer the main road) and the Pine Tree Quarry. The real Eastern Quarry is the second to the northeast of the Hebron Pond Quarry (with the Dirigo Quarry between the two). Also, although some maps are misleading, your "Eighteen Pond Quarry" is actually named the Eighteen Quarry, apparently for its location in Lot 18 of the early Piscataquis County maps.