On my local Craigslist....cool looking frame....I am trying to resist buying it......
https://monterey.craigslist.org/atq/d/pacific-grove-antique-tandem-monark-bike/6815841737.html
https://monterey.craigslist.org/atq/d/pacific-grove-antique-tandem-monark-bike/6815841737.html