Signs: Vineyard Haven Branch; 09200

Is this part of the 1918 McCall parade? Why are the N's backwards?

Can you identify any people, things, places, or events in this photograph? How about the time period? Or do you know where this photo came from? Email me at cbaer@vineyard.net.

Date: 1918?
Location: Vineyard Haven - * - *
Keywords: cars; flags; parades; nurses; medicine; floats; parades; holidays; celebrations