The Cellosaurus entry for Hey A8 does not contain any link to a trusted organization distributing that cell line:

https://www.cellosaurus.org/CVCL_8878

So as we describe in one of our FAQ:

https://www.cellosaurus.org/faq#Q09

"If you are unable to find and organisation that distributes your cell line of interest, you could try to contact the laboratory that established it or, if it is no longer in activity, a laboratory that makes use of that cell line."

Here is a paper from a lab in Texas, so not far from you, that has used Hey A8 recently:

https://www.nature.com/articles/s41388-020-01517-3

Good luck

Amos Bairoch