On this day in Lewis & Clark history...
The activities at the expedition's winter camp can only be imagined because no journals other than the Weather Diary exist for this day.
From the journals...
[Weather Journal for March 15, 1804]
weather wind Therm
weather wind r.
inches 15 2 a 0 c&s N W 48 a 0 r.a.s. N E r 5