Manhole Covers of Saint Paul – Sidewalk City
Boxoffice - Jan. 27, 1940
Forgotten Galicia - Lost in a Sea of Cobblestones: Lviv's
Collecting Manhole Covers - Antique Trader
1862 Manhole Cover Found in Central Park - Untapped New York
Collecting Manhole Covers - Antique Trader
Forgotten Galicia - Lost in a Sea of Cobblestones: Lviv's
St. Robert School Emerald Auction Catalog 2016 by Hidden Color
Minneapolis Riverfront News - Minneapolis Riverfront Neighborhoods.
Manhole Covers of Saint Paul – Sidewalk City
West Side Flats, St. Paul
Little Falls NY Historical Society Museum
A Eulogy for One of NYC's Oldest Manhole Covers
Cathedral of St. Paul: Newspaper section of its 1915 opening