While all of the Naxos Historical CDs in their Heifetz Centennial series are terrific, this, for me, is perhaps the best, as it brings back the great Heifetz/Steinberg 1947 recording of Bruch's Scottish Fantasy in excellent, clear sound, far better than the recent Pearl re-issue, where it always sounded like someone was frying bacon in the same room. Although the 1961 Heifetz/Sargent recording is terrific, as well, this is the recording of the piece that I grew up on, and it's better than ever.
The Brahms Double Concerto is worth hearing, as well. Even though the 1939 sound is a little muddy, you get the dynamic team of Heifetz and Feuermann, with the Philadelphia Orchestra under the young Eugene Ormandy. Even before I knew the concerto, I knew the second movement main theme as the theme from the soap opera "The Secret Storm" when I was a kid. No one disappoints here. Likewise, you have the Glazounov, dating from 1934. As with the Bruch, the sound is crystal clear, for the period, and the performance exceptional.