A very depressing catalogue of 100 marriages, published in 1907 [View all]

Done by socio economic class, it gives great insight into why we now have a 50% divorce rate. I'm quite frankly surprised it isn't a bit higher.

http://www.slate.com/blogs/the_vault/2015/03/03/history_of_marriage_a_list_of_100_19th_century_marriages.html

Two other things I took away were an appreciation for antibiotics that cure syphilis and a wish we could bring back "scrofulous" as a great descriptive for feckless, nihilistic youth with criminal tendencies.