John Frederick Parker

[LincolnMan]

The story of this man being employed by the D C Police never sat well in my mind. How could he, with his record, ever have obtained employment with the force? And then when employed, how did he secure the position as one of the guards to Lincoln that night, no less ? And how did he still have that particular assignment that evening after arriving for duty hours late?
And then wandered off from his post allowing Booth to murder Lincoln?