The library will be closed on Mon., Jan 19 in observance of Martin Luther King, Jr. Day. 

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Castleton Public Library, 85 South Main Street, Castleton-on-Hudson, NY 12033. Phone: (518) 732-0879 / Fax: (518) 732-0835. 
Hours: Monday-Wednesday 12:00-8:00 pm; Thursday-Friday 10:00 am - 6:00 pm; Saturday-Sunday 11:00 am - 4:00 pm.