(Oil & Gas) Pennsylvania- - World/Oceans Condition is very good with

Condition is very good with some mild browning to the sheet and one or two spots of foxing near the fold

it is a fascinating study

rivalled only by the green town of Boulder City sitting at the base of the Hoover Dam

Brisbane and Moreton Bay

States and territories in North America are numbered and a key lists each (all 20 at this time)

(Oil & Gas) Pennsylvania- - World/Oceans Condition is very good with(Oil & Gas) Pennsylvania. Wonders of the Natural Gas Region. An interesting print from the time before the countrysides were bathed in man made light. This print illustrates two instances of natural gas wells as their light would "spotlight" into the skies above and make a dramatic scene. The larger image shows "Remarkable atmospheric phenomena produced by the burning gas", while the small inset image shows the natural gas "Comets". Condition is very