Upton Sinclair: Biography, Facts and Career
Who is Upton Sinclair? An evergreen, sourced profile: biography, key facts and career.
2 articles

Who is Upton Sinclair? An evergreen, sourced profile: biography, key facts and career.

The Machine by Upton Sinclair: the LibriVox audiobook summary, 3 original MP3 tracks, 1:39:11 running time and a link to listen.