Times-Roman PostScript font file?

Hi all,

As the title indicates, I'd like to download the PostScript font files for the Times-Roman, Times-Italic, Times-Bold and Times-BoldItalic fonts for use on my Macbook (10.14.6) in creating PDFs. I have searched online for the fonts, but the only results I got were for the TrueType format, not PostScript.

Any ideas on where to find these in PostScript would be much appreciated!