Deletion of A Line Made by Walking

Comment: Without prejudice to the nominator, I love finding AFDs like this. I have added 17 sources, four of which are museum collections, and one of which is an entire book on the article subject: "A Line Made by Walking". This should be withdrawn as it will be a waste of time to discuss it here. The coverage is huge, it's a seminal work in the history of land art, and the nom does not appear to have done 
Stance: keep
Cited policy: Wikipedia:Articles for deletion (WP:BEFORE)