Here's a #TBT, just in time for the 4th of July tomorrow, of a USGS topographic mapping field camp in the early 1900s proudly showing their patriotism even when pitching tents in the middle of nowhere. Note the USGS "pick and hammer" flag flying below the United States flag. It was common practice to fly both flags in USGS field camps. Also note the "U.S." on the tents. Much of the USGS field gear at the time was obtained from army surplus. For those of you planning to celebrate the 4th, have a safe and happy holiday!