https://github.com/davepinch/pinchy.cc/blob/master/content/sites/stars.astro.illinois.edu/sow/zetacep/zetacep.snippet-age.md
The St. Croix Log Boom used a series of booms—logs chained end-to-end across the river—to catch timber as it floated downstream.
Zeta Cephei (stars.astro.illinois.edu) Third magnitude (3.35) Zeta, notably brighter than Delta, lies with Epsilon Cephei in a little triangle at Cepheus’s southeastern corner.