It was a known fact that Teddy Roosevelt carried a Colt 32 Auto in his waistband under his vest while out. In the Whitehouse as well as his personal residence, he also had a loaded double barrel 10 gauge in the corner of his bedroom. Nancy Reagan wrote and stated in an interview that she and Ronald Reagan both had small pistols under their pillows. She did not specify, but a later retired Secret Service agent said that they were both Walther 380's. No model specified. Harry Truman had a military 1911 he carried in WWI, he kept by his bedside in a box he made for it that housed the gun and a spare mag. It was known that George W. Bush carried some form of pocket revolver while working and driving around on his ranch, supposedly a nickled Colt Detective Special in his back pocket that his Dad "HW" gave to him. I don't know if he carried a firearm in his daily routine, but Bush was known to always carry a Surefire E2 Executive Light and a "good pocket knife". He had two specific Case Knives he carried. A "Trapper" for dress, and a "Folding Hunter", at other times. These are just some of the ones that I have read about in gun mags and such over the years.