Rap before rap - Talking Blues, Truck Driving songs, Musicals etc.

I collect here any sort of music that its vocals resemble rap and was recorded (and prefereably released) approximately before 1970-1975. Pieces resembling this pre-hip-hop rap expression released after this period may also be included, as well as 70's non-hip-hop pieces that resemble contemporary spoken-word-like new-school rap. I'm not really looking for the so-called proto-rap, yet, some proto-rap songs may be included due to their connection to styles covered here. Practically, several older in age artists in the 70s may have generated rap-like songs without being influenced by rap - such songs may be included, if obvious influence isn't observed. The main sub-genres consisting this list are mainly Talking Blues, Gospels and Spirituals, Truck Driving Songs, Musical/Opera/Comedy themes. I try to not include the same song twice (like from different uploaders or on different covers by the same artist(s)), but I may add both recorded versions and live footages, or same tracks by different artists. Suggestions are always welcome!