The only reminder left that Portland once had a streetcar/trolley network is found on Munjoy Hill, where a small patch Congress Street features exposed cobblestones and old rails.
I am having a hard time finding any information about the trolley network in Portland. The topic mentioned in a blog post here, and that the network was completely removed by the mid-1940's. I also checked for some information on the Seashore Trolley Museum's website but they didn't have any information specifically about Portland's trolleys.
Most small towns in Maine had a trolley system around the turn of the 20th century. I would love to see a map of Portland's network. What I do know is that there was a line that went up and down Congress Street and also a line that went to Riverton Trolley Park. Here is a website created by a USM student, which has a brief history of the trolleys of Portland. Here's an excerpt:
I guess this post doesn't have much purpose other than to reminisce about the long-ago existence of what sounds like a great mass transit system. The removal of the system was most likely due in large part to the rise of the automobile and suburbia.
I attended the open house at the Maine Historical Society on Saturday and am considering joining in order to do some research about this trolley topic. I will keep you posted!