1874-1929 1878-1962 20thcentury amsterdam artcollectionsperrée atlantis atlantis(legendaryplace) authors biography birdsinart borchardt calles cayce christianity colorprints consciousness correspondence correspondenceborchardt criticismandinterpretation criticismandinterpretationborchardt criticismandinterpretationhofmannsthal criticismandinterpretationschröder diaries edgar exhibitions flowersinart german germanliteratureborchardt history historyborchardt historyconfederaciónregionalobreramexicana hofmannsthal hugovon intellect jan knowledge koson marieluise mayas mexico middleagesinliterature netherlands ohara parapsychology plutarcoelías politicalactivity politicsandgovernment presidents privatecollections prophecies(occultism) psychics reincarnation religiousaspects rijksmuseum(netherlands) rudolf rudolf1877-1945correspondence rudolfalexander schröder unitedstates workingclass