On poking further, this is what Dr. Frank had to go on (via archive.org).
Remarks: Modified: 11/29/2019
05/01/2019 -- Added link to the South Danvers Observer (stale pointer). Also, new post about this theme: Gardner's bridge.
05/07/2019 -- More on Gardner's bridge. We'll be updating the modern map's relationship with Perley's walkabout.
11/29/2019 -- Links to South Danvers Observer disappeared in the last few months).