Hi Hamleyseeker: As I live in the larger of the two places you will be visiting, I checked out the genealogical resources across the river in Newark.
Newark's Registrar's Office is in Room 111 at City Hall, 920 Broad St., Newark. Not sure what kind of records will be available there for some of the dates you've posted. No e-mail address.
The Newark Public Library's main branch is at 5 Washington St., Newark. Hours from Sept. 7 are 9 am to 8:30 pm on Wednesday and Thursday and 9 am to 5:30 pm on Friday and Saturday. Other days closed, due to budget cuts.
The Charles F. Cummings New Jersey Information Center is where Newark Library's genealogy resources are located. The URL is
http://www.npl.org/Pages/Collections/njic.html#genealogy. There is an e-mail address on the web page, if you want to send questions ahead of your visit.
The PATH train connects Manhattan and Newark (Newark Penn Station). In Manhattan the PATH runs underground to 34th Street. You can connect with it at a few stations of the New York City subway, including 34th St. and the World Trade Center site. Unfortunately, there are separate fares on the New York City subway (unlimited daily, weekly ride cards) and the PATH train ($1.75 each way on the PATH).
City Hall and the Newark library are each within a half mile of Newark Penn Station. One is north, though, and the other is south.
Regards,
John