1865: http://www.iapsop.com/ssoc/1865__rowbotham___zetetic_astronomy.pdf
1899: http://www.whale.to/c/zeteticcosmogon00recgoog.pdf
1901: https://vaultedearth.files.wordpress.com/2017/02/terra-firma-the-earth-is-not-a-planet-proved-from-scripture-reason-fact.pdf
1922: https://www.theflatearthsociety.org/library/books/Kings%20Dethroned%20(Gerard%20Hickson).pdf