In 1959 and 1960, Alan Lomax revisited the American South to record the still-living stream of traditional music in newly developed stereo sound. The collection features some of the region's most representative musicians and styles: Delta blues...
Reckoning boards;Tallies;Accounting machines -- History
How could our ancestors do accounting while they were still illiterate and had no paper? The answer is that they used the tally and the checkerboard. In medieval Europe, the tally was normally a short stick on which notches were cut to represent...