Deletion of Grassman

Comment: per . See references here: https://books.google.pl/books?id=XAgmDwAAQBAJ&pg=PA116&dq=ohio+grassman&hl=en&sa=X&ved=0ahUKEwi4rdjY2azfAhVmsosKHT5lB1MQ6AEINTAC#v=onepage&q=ohio%20grassman&f=false 1 https://books.google.pl/books?id=awRgLQi_R5sC&pg=PA127&dq=ohio+grassman&hl=en&sa=X&ved=0ahUKEwi4rdjY2azfAhVmsosKHT5lB1MQ6AEIVjAI#v=onepage&q=ohio%20grassman&f=false 2
Stance: keep
Cited policy: Wikipedia:Notability (WP:GNG)