| gptkbp:instanceOf | gptkb:astronomer 
 | 
                        
                            
                                | gptkbp:addedToNationalRegisterOfHistoricPlaces | 1985 
 | 
                        
                            
                                | gptkbp:affiliatedWith | gptkb:University_of_Chicago 
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                                | gptkbp:architect | gptkb:Henry_Ives_Cobb 
 | 
                        
                            
                                | gptkbp:buildingType | gptkb:Romanesque_Revival 
 | 
                        
                            
                                | gptkbp:country | gptkb:United_States 
 | 
                        
                            
                                | gptkbp:diameter | 90 feet 
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                                | gptkbp:established | 1897 
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                                | gptkbp:founder | gptkb:George_Ellery_Hale 
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                                | gptkbp:hasArea | 77 acres 
 | 
                        
                            
                                | gptkbp:hasLibrary | yes 
 | 
                        
                            
                                | gptkbp:hasSecondaryTelescope | gptkb:6-inch_Clark_refractor 12-inch refractor
 1-inch refractor
 1.5-inch refractor
 10-inch reflector
 13-inch refractor
 15-inch reflector
 2-inch refractor
 20-inch reflector
 24-inch reflector
 3-inch refractor
 4-inch refractor
 41-inch reflector
 6-inch refractor
 8-inch refractor
 
 | 
                        
                            
                                | gptkbp:latitude | 42.5717 
 | 
                        
                            
                                | gptkbp:location | gptkb:Williams_Bay,_Wisconsin,_USA 
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                                | gptkbp:longitude | -88.5503 
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                                | gptkbp:mainTelescopeAperture | 40-inch 
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                                | gptkbp:mainTelescopeStatus | largest refracting telescope ever used for astronomical research 
 | 
                        
                            
                                | gptkbp:namedAfter | gptkb:Charles_T._Yerkes 
 | 
                        
                            
                                | gptkbp:notableAstronomers | gptkb:Edwin_Hubble gptkb:Subrahmanyan_Chandrasekhar
 gptkb:Nancy_Grace_Roman
 gptkb:Otto_Struve
 
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                                | gptkbp:NRHPReferenceNumber | 84003791 
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                                | gptkbp:openToPublic | yes 
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                                | gptkbp:ownedBy | gptkb:Yerkes_Future_Foundation 
 | 
                        
                            
                                | gptkbp:previousOwner | gptkb:University_of_Chicago 
 | 
                        
                            
                                | gptkbp:telescopeType | gptkb:astronomer refractor
 
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                                | gptkbp:usedFor | astronomical research education
 public outreach
 
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                                | gptkbp:website | https://yerkesobservatory.org/ 
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                                | gptkbp:bfsParent | gptkb:George_Ellery_Hale gptkb:Nancy_Roman
 
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                                | gptkbp:bfsLayer | 4 
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                                | https://www.w3.org/2000/01/rdf-schema#label | Yerkes Observatory 
 |