That’s a big 10-4 on those boobs! This cover of Mechanix Illustrated is from May 1959 and this gal probably had something to do with the popularity (among men) of the CB radio.
Mechanix Illustrated was originally published by Fawcett Publications with CBS now owning some of the copyrights. So far, I’ve only found 2 issues from 1959 that have renewed copyrights (not this issue) so use this image at your own risk. Many copyrights prior to 1963 have expired and if not renewed within 28 years, fell into the public domain.