I am a college student currently enrolled in a technical writing class. I have an assignment that requires me to look at how documentation has changed over time in the profession that I intend to go into. I plan on starting the online class for the CPC certification in January, so I chose medical coding as my subject. I have found medical coding books from 2017 and 2007, but I haven’t been able to find anything older than that. Could anyone point me in the right direction to find historical documentation with examples of medical codes? The older, the better. Thanks.