%0 Generic %A Cameron, Jenks. %C [S.l.] : %D 1922. %I [s.n.], %T National Park Service its history, activities and organization / %U http://SK8ES4MC2L.search.serialssolutions.com/?sid=sersol&SS_jc=TC_008413833&title=National%20Park%20Service%20%3A%20its%20history%2C%20activities%20and%20organization