Fast forward- Richmond Hill David Dunlap Observatory is now a National Historic Site of @Canada Happy 88th anniversary! @RASCTC @ParksCanada #RichmondHill #DDO @CdnHeritage @ONheritage @RHHS_YRDSB @YorkRegion #astronomy #telescope #observatory #park #NationalHistoricSite #ONMuni
Fast forward- Richmond Hill David Dunlap Observatory is now a National Historic Site of @Canada Happy 88th anniversary! @RASCTC @ParksCanada #RichmondHill #DDO @CdnHeritage @ONheritage @RHHS_YRDSB @YorkRegion #astronomy #telescope #observatory #park #NationalHistoricSite #ONMuni
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