travelling salesman 
noun
A representative of a firm who visits shops and other businesses to show samples and gain orders.Later, merchants centered in Nuremberg gained control over these traveling salesmen and forced village artisans to adopt uniform designs and to specialize....
- Late in the fall of 1879 a traveling salesman visited the Alfred Shaker village, taking advance subscriptions for a history of York County, Maine.
- Similar, if somewhat warmer, hospitality is offered to particular travelling salesmen who visit the community regularly.