If anyone needs assistance at the NYC Municipal Archives I am getting ready to do my next research trip. It is likely to be Tuesday this week or the following week depending on a few issues on my schedule.
What I can do is retrieve or read and transcribe vital records that you have identified. The Archives holds:
NYC births through 1909 NYC Deaths through 1948 NYC marriages both Health Department and City Clerk through 1949
They also hold some other records such as the 1890 Police Census (no index though)
Generally what I do is retrieve the files you have identified but can not access on your own. I can buy copies $11 each or take notes and email you. Also if you have a "maybe" file I can look at it and compare it against your information, example to see if the parent's names are what you expected. so save buying something only to find it it is the wrong person.
I do appreciate a few dollars to help offset my expenses when I do this plus any printing costs
Email me off list if you are interested and we can discuss what I can do. Always happy to offer advice or comments about NYC area research and the tricks of the trade.