videos in AudioSet
A list of about a million ten-second YouTube clips, each labelled with the sounds in it, that Google published in 2017. Labs use it to train and test general audio and music models.
Including (MSTS1) Boston FM Radio Audio 1970's - (1 of 2), WGBX-44 Boston - Glass Shimmer ID - 1989, WLVI-56 - The Ten O'Clock News Opening - 1996