By Kirsten Salyer
Nouriel Roubini on Germany ignoring the lessons of the 1930s
The Center for Economic Studies on the rise and fall of union membership
The British Museum on the history of money
The Big Picture on the importance of paying attention to long secular cycles
Free Exchange on the decrease in American mobility
History News Network on Supreme Court justices misquoting Alexander Hamilton in the health-care dissent
Read more from Echoes, Bloomberg View's economic history blog.