Complex sentence: The Adams Express Company occupied part of the Pinkerton Building at 57-59 Broadway, and in 1904 a fire that began in the basement of the Morris Building at 63 Broadway damaged the Pinkerton and other buildings in the block.
Split into simpler sentences: The Adams Express Company occupied part of the Pinkerton Building at 57-59 Broadway. A 1904 fire that began in the basement of the Morris Building at 63 Broadway damaged the Pinkerton and other buildings in the block.