I found a few of these NASCAR Press Passes in the Bill France Racing accumulation that I purchased a few years ago. Bill France Racing (later NASCAR Publications) was located in Greensboro, NC. When they closed in 1979, the contents were carefully packaged and stored for 40 years, until I acquired the remainder in 2019. Great programs, posters, newsletters, and a few of these passes. I'll add more as these sell!
This CONVERTIBLE SERIES race was held on Sunday March 16, 1958 and was won by NASCAR Pioneer Billy Myers.