Deletion of Otto bookstore

Comment: I agree - I am unable to find any references that meet the criteria for establishing notability. The claim of being the oldest independent bookstore appears to be https://www.ottobookstore.com/ottos-history research conducted by the owners. It is, of course, probably true, but fails our tests for independent content. Topic fails GNG and 
Stance: delete
Cited policy: Wikipedia:Notability (WP:NCORP)