Technology 1825 in science

^ drewry, charles stewart (1832). memoir of suspension bridges, comprising history of origin , progress. london: longman, rees, orme, brown, green & longman. pp. 110–114. retrieved 2011-04-18. 
^ finch, roy g. (1925), story of new york state canals (pdf), new york state canal corporation, retrieved 2012-09-25 
^ gee, william; james, frank a. j. l. (2004). sturgeon, william (1783–1850) . oxford dictionary of national biography. oxford university press. doi:10.1093/ref:odnb/26748. retrieved 2012-01-05.  (subscription or uk public library membership required)