1. Sveriges geologiska undersökning. Ser. Aa. 80 & 81, Bladet "Dalarö". Yale Public content 1880. 2018-06-06T17:49:55Z. 2020-08-14T18:08:26Z. Sveriges geologiska undersökning, issuing body. Tryckt i Gen. Stabs. Litogr. Anstalt. Swedish. cartographic image. Public. Sweden and Haninge kommun.