The National September 11 Memorial & Museum (911 Memorial) has Family bathrooms throughout. These aren't dedicated nursing rooms but if you're in need of a place to breast pump while there, there are outlets present in some of these rooms and table tops. Not ideal lactation room conditions but until there's a dedicated lactation room installed this is one option.
Note: Report mom-shaming or harassment while nursing in public or near lactation rooms (breastfeeding rooms), at Moms Pump Here mobile site https://www.momspumphere.com
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