An Utterly Incomplete Look at Research from 1825

I see that you've mentioned "The Ego and the Id" by Freud. There is another work of his, five lectures on psychoanalysis from 1909 that i find very fascinating to read, https://dspace.mit.edu/bitstream/handle/1721.1/65347/sts-003-spring-2008/contents/readings/freud.pdf. Freud introduces the 'Talking Cure' and case studies that led to him developing what we commonly know as therapy.