A McArthur Library photograph shows two of Thornton Academy’s campus at the turn of the 20th century.

A McArthur Library photograph of Biddeford’s tercentenary parade in 1916 shows one of the city’s Main Street mill buildings under construction.

A news photograph from 1959 shows a row of handsome triple-deckers in East Bayside, shortly before the area was bulldozed for urban renewal.

Gorham’s old Free Meeting House, today an art gallery for the University of Southern Maine’s Gorham campus, as it looked in 1961.

A 1940 news photograph shows the Lancaster Block, one of the historic brick office buildings in Portland’s Monument Square.

A 1946 news photograph shows the building that now houses Renys in downtown Portland when it first opened, as the F.W. Woolworth department store.

A snapshot of a downtown Portland intersection before urban renewal.