Ooops.

Here's the correct link for the JSE petition, in case you didn't already find it. Sorry, I picked up the wrong one and didn't double check it to be sure it worked. 

https://www.change.org/p/friends-of-the-john-slade-ely-house-save-the-john-slade-ely-house-of-contemporary-art-fbcc2aa6-282f-460c-9c07-bad33ede121d?source_location=petition_footer&algorithm=promoted#petition-letter

/j