Timed-entry ticket reservations continue to be required for Museum entry. Facial coverings are strongly recommended. See Health and Safety.
CLIO -- Columbia University Libraries
New York Botanical Garden Mertz Library Catalog
MUSCAT -- Muséum national d'histoire naturelle (French National Museum of Natural History)
SIRIS -- Smithsonian Institution Research Information System
Natural History Museum Library, London
Other Natural History Libraries
A number of useful databases are available from New York City public libraries and you may gain remote access to many of these resources just by having a library card. (You may obtain a library card for all three libraries listed below if you live, work, or own property anywhere in New York State.
New York Public Library Catalog
Brooklyn Public Library Catalog
The British Library Public Catalog (BLPC)
Other European Library Catalogs
Libraries of the World, and their catalogues