New York City is starting to open up after over a year of COVID-19 related closings. The New York Public Library opened all its branches on July 6, including the Stephen A. Schwarzman building. Not all the resources at Schwarzman will be available on a walk-in basis though. Many of the research collections will still require an appointment to access.
The Municipal Archives will will re-open to the public on July 12 by appointment only. To schedule an appointment for family history research, email firstname.lastname@example.org. To schedule an appointment for library and archives research, email email@example.com. See this notice on their website for more information.
For more openings, including state-wide, the New York Genealogical & Biographical Society has a new post with details: Archives and Libraries: Summer Reopenings.