Reference sites people actually use.

Caslon Media is an independent, founder-owned publisher in Amsterdam. We build and run reference websites — school reading lists, sourdough math, product spec databases — researched from primary sources, kept fast, and built to be cited.

A growing network of reference sites · 4 content families · founded in Amsterdam

See our brands Work with us

A few of our brands

readinglist.schoolOfficial school reading lists for every US state, organized by grade and curriculum.Visit → readstacks.comChapter-level guides to the most-read nonfiction books.Visit → audiobookindex.comA sourced database of audiobook awards and narrators.Visit → sourdoughhydration.comHydration math and flour science for sourdough bakers.Visit →

See all brands →

How we work

Research

Every site starts from a real, finite dataset and primary sources — state education departments, published standards, manufacturer specifications.

Verify

Every fact traces to its source. If we can't verify something, we leave it out. No padding, ever.

Publish

Fast, quiet pages with the answer at the top. Few ads, clearly separated. The kind of page you'd bookmark.

Maintain

Sites are kept, not churned. Data gets re-verified, dated, and corrected in the open.

Read our editorial standards → Meet the team →