Use the following sources to find period spoken word or musical recordings or period visual images
Smithsonian Global Sound streaming audio database has more than 40,000 individual tracks of music, spoken word, and natural and human-made sounds from Smithsonian/Folkways and other record labels. Included are readings of literary and dramatic works, historic speeches, language instruction, natural sounds, environmental and mechanical sounds, sound effects, children's music, and traditional music from virtually everywhere in the world. Playlists can be created for personal or classroom use.
example : "Frozen Chosin." YouTube, uploaded by Arizona Public Media, 26 October 2016, https://www.youtube.com/watch?v=w_6uupAEKIU.
YouTube is not an author or producer of content. Anyone can upload content to YouTube and is credited just below the title and date the video was uploaded to YouTube. (Please note that this date is not necessarily the date that the content was created.) The entity that uploaded the video must be included in your citation. You are responsible for verifying that the uploader is providing authoritative content.