San Francisco has some unique requirements that lend it to needing wood ladders in place of aluminum ladders like most cities.
The shop that makes them today has been doing so since 1919, and some of the earliest ladders are still being refurbished and kept in use. These craftsmen in the shop take their job seriously, for instance, they keep the wood on site for 15 years before using it so the wood can acclimate over time to the local climate!
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