Is Castle William the same place as Castle Garden, the immigrant arrival port
opened in 1856?

What is a good source for photos of New York Harbor in 1847?

Is there a description of what an immigrant would do one he/she got off the
boat in New York to get to the Hudson River Steamboat Co. to go to
Albany?--again in 1847?

I am going to be in NY City in February and plan to go to the NY Public
Library to do some research on immigrant arrival in the period of 1847-1865.
Any suggestions on the best way to do this.  I have not been to the library
before.

Any and all help appreciated.

Carole Krysan
Lousiville, KY