Zebra Systems 1987 Catalog 

Above is a reproduction of the Zebra Systems, Inc. Catalog 87A from 1987 when Zebra was located in a storefront in Woodhaven Queens, New York City.

Some of these vintage books, TIMEX and SOFTSYNC cassette software, MEMOTECH modules, SINCLAIR ZX81 Kits, and more are still being sold by Zebra on ebay as of 2023, along with newly manufactured upgrade tactile ZX81 keyboards and ZX81 Video converters.

https://www.ebay.com/str/zebrasystemsinc