J. Spalding and B. F. Isherwood
Description and Illustration of Spaulding & Isherwood's Plan of Cast Iron Rail and Superstructure, for Railroads
George F. Nesbitt
Originally built using wood or stone for bridges and as a base for rail, railroads were either expensive to build or constantly under repair. Something new was needed to affordably build railroad track. This publication, originally from the UK shows the benefits of using the new technology of cast iron in construction. Soon after this booklet appeared, railroads in the US also began using cast iron and changed the way railroads would be built in America.