Marek Blahuš - Ciferecigo de la Zamenhofaj adresaroj: rezultoj
Why the open web links it
Presents results of digitizing Zamenhof's Esperanto address books, revealing historical data on early Esperanto learners.
Linked by 2 independent sites, 2 of them widely read in the 2026-10 crawl of the open web, including wikipedia.org, wikisource.org.