The Longest Post War Bull Market by Christopher Pavese, The View from the Blue Ridge.
A few more thoughts on recognizing where we are in the cycle, illustrated by SG:
The US has now “enjoyed” its longest bull market since WWII. Over this period, the S&P gained over 200%, making it the third-strongest six-year run since 1900. The two others, 1929 and 1999, did not end well.
This has also been one of the longest periods not to have seen a 10% correction, according to SG. The current 800 trading days was only exceeded in 1999 and 2007 ?. Those periods did not end well either.