FROZEN IN TIME - Mitchell Zuckoff - phenomenal, you will never look down at Greenland from the flightdeck the same way again

ASTORIA - Peter Stark - just, WOW

Anything already mentioned before by LARSON and BRYSON is great, IMHO

Add DEAD WAKE and DEVIL IN THE WHITE CITY by Larson.

That about sums up my last five year plus foray into non-fiction, and they have all been great reads.