Running Solo in DC

Eschewed Rock Creek Park for a one hour run along the Potomac and the tow path. Went NW past Georgetown. Turned back after 25 minutes or so. Threw in a loop of the Key Bridge and then back to Foggy Bottom for a quick shower, check out and a nice day of legal history at a GW conference on Standard Oil at 100. Do we really need three papers on whether the railroad rebates were real or cost justified?