I was rereading Morris's Colonel Roosevelt bio last night. Some links between the 1912 and 2016 pres. campaigns are striking. For instance, TR said of Taft during the campaign in April: "He has been disloyal to every canon of ordinary decency and fair dealing.... Such conduct represents the very crookedest type of a crooked deal."
Then, in July 1915, on WW I, as he was getting angrier and angrier about Wilson's "too proud to fight" mentality, Roosevelt said: "The time for words on the part of this nation has long passed. The time for deeds has come."
For sure, on the personal details, the TR/Trump comparison splinters-Trump not an outdoorsman, not at all scholarly, not an explorer-but we can still learn some things from looking at Trump as a bit of a TR echo.