descriptopm

"inscription"=>"Via usa365.nl/john-mccormick/"

"about:wikidata"=>"Q84227","about:wikipedia"=>"nl:Paul Ehrenfest","material"=>"stone","memorial"=>"plaque"

"artist_name"=>"Guido Geelen","inscription"=>"DANK MONUMENT. TER HERINNERING AAN DE MENSEN DIE HUN LICHAAM AFSTONDEN AAN DE WETENSCHAP","material"=>"bronze","memorial"=>"sculpture","start_date"=>"2018-10-16"

"inscription"=>"Ligplaats van het kruitschip gesprongen 12 januari 1807","material"=>"stone","memorial"=>"hazard_memorial"

"about:wikidata"=>"Q1692044","about:wikipedia"=>"nl:Johan Luzac","material"=>"metal","memorial"=>"plaque","start_date"=>"1909"

"memorial"=>"war_memorial","wikidata"=>"Q13927462"

"memorial"=>"plaque"

"memorial"=>"plaque"

"material"=>"metal","memorial"=>"plaque","subject:wikidata"=>"Q315163","subject:wikipedia"=>"nl:Josephus Justus Scaliger","wikimedia_commons"=>"Category:Joseph Justus Scaliger"

"memorial"=>"plaque","start_date"=>"08-06-2023","subject:wikidata"=>"Q370069","subject:wikipedia"=>"nl:Józef Wybicki"

"material"=>"stone","memorial"=>"plaque"

"material"=>"bronze","memorial"=>"plaque"

"location"=>"wall","subject"=>"Lucretia Wilhelmina van Merken","subject:wikidata"=>"Q3265974"

"access"=>"yes","inscription"=>"Memorial railroad section to the old factory train that ran through town","wikimedia_commons"=>"File:Stootblokhaarlemmermeerleiden.jpg"

"material"=>"stone","memorial"=>"plaque"