On 11/2/2017 9:02 AM, John Kuthe wrote:
> On Tuesday, October 31, 2017 at 9:30:59 AM UTC-5, Casa de los peregrinos wrote:
> ...
>> Black light posters for the basement?
>
> Of course! I have a great big Moire pattern poster I had in my room in the 1960-1970's!!
>
> John Kuthe...
>

Very cool.

https://i.pinimg.com/236x/52/1e/f3/5...c028669f5a.jpg

or?

https://i.pinimg.com/736x/30/d8/41/3...28a16962f6.jpg