Thistlebase
An Analysis of the Thistle Population Center
Kelley analyzes how the geographic center of Thistle fleet distribution has shifted over four years, moving northeastward from Cincinnati, Ohio toward the Pittsburgh area. He examines trends in fleet sizes and activity across different regions to determine the class's development.
View original on Google Drive · page 2
The scanned issue opens in Google Drive; turn to page 2.
This is a summary. The full article text is © the Thistle Class Association — read the original scan via the link above.