DCHP-1 Online
summer express Fur Trade, Hist. 
the summer trip of the express (def. 1).
See also: express (def. 1) winter express
- 1890 This was the summer express, hurrying down to Grand Portage with the result of the winter work.
- 1918 The summer express hurried down to the place of rendezvous. . . .
- 1890 This was the summer express, hurrying down to Grand Portage with the result of the winter work.