Huge dry dock at League Island, USA completed according to the Dutch magazine Marineblad dated 1907-1908 No. 7

An item reported that at League Island, Philadelphia, USA for account of the US cabinet a dock was completed in her kind the largest in the USA. Dimensions 654 x 140 x 30 (depth ‘doorstep’ at high tide) feet. Built within 7 years, cossts12 million guilders.