I believe many of these images, especially Spock, came from Sam Harbison (RIP) at Princeton.

They were EBCDIC art, not ASCII! Made on the IBM/360 with the 1403 printer.

See http://q7.neurotica.com/Oldtech/ASCII/

On Sat, Feb 13, 2021 at 7:34 PM Will Senn <will.senn@gmail.com> wrote:

On 2/13/21 6:27 PM, Mary Ann Horton wrote:

Picture tapes. I had a collection of 20 or so. A few of them were girly pictures, but there were several excellent ones. Nemoy as Spock holding a model of the Enterprise.

I remember this one from back in the day:

https://www.atariarchives.org/bcc1/showpage.php?page=cover1

Detail from image (small enough to include here):

Will