A artist I follow, unicorngore/ buncovenvt, had deleted her twitter account which held much of their art. I saved about every art piece of theirs from that account before they deleted it. And while some pieces have other uploads on furaffinity or itaku, the majority do not and have not been reuploaded since. My question is how should I list these art pieces as having no source since they are from the now deleted twitter? Or is there some other way I should be listing these? Thankyou in advance.