Should any wish to time-trip á lá Billy Pilgrim, GOld Time Radio [sic] gets you a link-fest, such as this coverage of D-Day 1944, with some names as will be familiar even to today's jaded info-consumers: Ed Murrow, William L. Shirer ... FDR et al.

For a 15-min recap of that Longest Day, see ref-to-link following. There are, amidst refs to audio-on-film (!) almost continuous recordings (though Germans had tape recorders and.. later, some US-ians had 'Webcor' wire recorders etc.) seems that a film-track, however expensive that: was highest fidelity when price-no-object.
(But I no exact historian of other nuances du jour.)
(I did record a solo on a Webcor once, but couldn't afford to buy a new reel for its owner/lost forever, that masterpiece.)

As midnight neared and D-Day wound to a close, NBC’s Lyle Van summarized the day’s happenings - nearly 24 historic hours capsulated into a clearly reported 15 minute newscast also posted below as Van News NBC-8.

'Course there's MUCH more on the site, from those days when the excitement of Inner Sanctum evoked in all rapt tykes' ear-pans: early-training of one's capacity-to-Imagine.. {{anything}}.
[..so Handy today! when attempting to plumb the depths-of-depravity of now so-Many {fill-in Your list of mofos.}]