Posted in 1906, from Bath, the image shows Portland's harbor and the Boston and New York steamers.
From the 1930s or 1940s, showing the east side of Boothbay Harbor.
"Maine's Lobster Country" is actually Friendship Harbor, as many of the readers of The Working Waterfront in print called and wrote to tell us.
A view of Eastport's harbor over the rooftops of buildings.
Main Street in Ellsworth, circa late 1930s or 1940s, which apparently billed itself as "The Friendly City."
This image probably dates from the era when Maine began marketing itself as "Vacationland."
This postcard was sent from Winter Harbor in 1971, showing Beals Island. The writer noted she was relaxing "and having a good time."
If Maine is indeed "Vacationland," the state should be well-documented in postcards. And it is, as can be seen in Maine Memories: A Vintage Postcard Tour, by John Brunkowski and Michael Closen.
The book is available at Ebay and Amazon; from the publisher SchifferBooks.com; and at all five of the Sherman’s Bookstore; and at several other gift and tourist shops.