I last grabbed images from them through 01 January 2024. Any posts after that point are not accounted for.
https://twitter.com/applewhite69 (deleted)
https://www.furaffinity.net/user/applewhite/ (still online, but last updated in 2020)
I am not aware of any other accounts they have.

They also appear to have been applewhite on the somethingawful forums, judging by that one gerfwald comic that was on their twitter account and the huge number of them over on that site.

removed all the duplicates from FA since they were lower quality than the twitter ones this time.