---
title: "2othcentury:\n\nProfessional Software Systems ad, 1979"
date: 2016-10-30 07:41:39 +00
tags: tumblr
---

![mirrored image from https://66.media.tumblr.com/c4276647d2f2a5072a5cc6732178d3e2/tumblr_ob3bnkudQJ1re5o97o3_r1_540.png without alt text, sorry](./152499334153.png)

[2othcentury](http://2othcentury.tumblr.com/post/152041944433):

> Professional Software Systems ad, 1979

October 30th, 2016 12:41am