Originally Posted by OTRA15
Thanks Ray for the clarifications. Aren't old topo maps great? Many times there are structures shown, the foundations of which are still there in the ground. Unfortunately reading maps esp. topo information is a dying art.
Wally, you are close to understanding about topo maps.
The maps are still great... the users are 'dying out'.
Many of my thousands of geological papers usually have one or more colored topographic, geologic, mining, etc. maps in a pocket at the end of the text. These maps are removed, pressed flat and inserted into an expensive frame. They are ART FORMS that, as imperfect as they were being drawn and engraved by people seeing the geology in detail and in person... still are a reminder how talented these early explorers were in their professions.
There are also great Soil Survey maps and Water Survey maps... even copies of the publications, when California managed to claim the water of the Colorado River from the rubes in the Rockies. The locals believing, who in their right mind would live in the Rockies, anyways. Now we are closer to water rationing in Colorado and the ski resorts fight over water to make snow each year.... that is assigned to others. Oh well. That is close to being accurate, but embellished a bit for some examples.
I traded a hundred pounds or more of Arkansas crystal clear quartz crystals for a newly discovered hoard of Leadville, Colorado mining district maps from 1905. They were tearing down buildings and several guys found the unused stack of 36"by 36" maps of the Leadville Mining District. In two paper stocks... if you want to know that much detail.
A Map Dealer in Boulder, Colorado traded me some reprints from 1860's Denver for one. I figure I have $15 in each copy I own. His in house framer did a frame that made the map look like the 'rarest in the world' and a piece of Colorado History. Price: $1500.00
So, those of you who junked your Dad's geological Professional Papers and Bulletins... you may have tossed away your paying for a new F350 Diesel Ford Pickup truck. Those obsolete maps are worth more than the book and... like cash, worth more than the paper they are printed upon.