When did the US start abbreviating it's presidents's

>>1857972
FDR was called that to differentiate himself from Teddy Roosevelt.

>>1857972
I think Teddy Roosevelt was called TR even before he became president. Not sure though

Nixon didn't use a three-letter initial, even though he has a middle name. His memoirs are titled "RN".

Pretty sure GWB is used occasionaly, I assume it's just for presidents who for whatever reason were referred to with the middle name/initial enough that people would recognize the abbreviation.

>>1858009
I usually just hear people refer to him as Dubya and his dad HW

Nixon is a catchy short surname, much like Clinton