In 2010, I founded the Endangered Language Alliance, a non-profit organization that works with indigenous and immigrant communities from all over the world right here in NYC to document, describe and promote their languages. ELA is now under the steady leadership of my colleague and co-director Ross Perlin. See the ELA website, YouTube channel and/or facebook page for current work. For our recently completed digital Map of the Languages of New York City see: www.languagemap.nyc, which is described in more detail here:
Perlin, Ross, Daniel Kaufman, Mark Turin, Maya Daurio, Sienna Craig, Jason Lampel. 2021. Mapping Urban Linguistic Diversity in New York City: Motives, Methods, Tools, and Outcomes. Language Documentation & Conservation 15: 458-490. https://scholarspace.manoa.hawaii.edu/handle/10125/74664