From the NFPA Quarterly v.17, no. 1, 1923:
"The fire started inside of a hollow wooden partition on the fifth floor. The photograph shows one side of the partition removed. Traces of mice nests and refuse brought in by mice were clearly visible after the fire. The building [was] known to be infested with mice as other hollow partitions removed after the fire disclosed mice nests similar to the one which caused the fire... Three sprinkler heads operated and extinguished the fire shortly after it broke through the partition."
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