Explore Chicago Collections
https://explore.chicagocollections.org/records/?f2-topics=Natural+%26+Built+Environments%3A%3ARailways&f5-topics=Work%3A%3AScience&f1-institutions=Chicago+Academy+of+Sciences+%2F+Peggy+Notebaert+Nature+Museum&f3-topics=Natural+%26+Built+Environments%3A%3ARailways