Shel Silverstein's literary estate is also known to take scholars and biographers to court under some misguided notion of protecting the brand. http://www.slat

Shel Silverstein's literary estate is also known to take scholars and biographers to court under some misguided notion of protecting the brand. http://www.slate.com/articles/arts/books/2013/10/my_shel_silverstein_biography_can_t_quote_shel_silverstein_why.html http://www.slate.com/articles/arts/books/2013/10/my_shel_sil...