skos:altLabel | - 21
- Route 21
- State Route 21
- NY 72
- NY-21
- :New York State Route 21#Establishment
- County Route 21A (Warren County, New York)
- County Route 22 (Putnam County, New York)
- County Route 23 (Allegany County, New York)
- N.Y. Route 21
- NY 21
- NY 21
- New York State Route 21#Establishment
- New York State Route 21
- New York State Routes 21
- Route 27 (Erie County, New York)
- New York State Route 21#Realignments and truncations
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