Registration Help

[MKY661]

Hello Everyone. I missed some Registrations during my Visits to JFK during late May. Is there any chance that some of you ca help me find them? It would be really appreciated. Thanks! :)

25th May 2013:
United Airlines Boeing 757-200 (seen at Gate 7 at 12:11)
United Airlines Boeing 757-200 (seen at Gate 9 at 12:11)
American 737-800 (seen at Gate C33 at 12:13)
American Eagle ERJ4 (seen at Gate C31A at 12:14, arriving at stand)
American Eagle ERJ4 (seen at Gate C31B at 12:14)
All JetBlue aircraft seen parked at stands which can be seen from the middle of Runway 31 at 12:11

31st May 2013:
JetBlue E-190 (Seen Landing on runway 22L at 17:34)
JetBlue E-190 (Seen On Taxiway Near T8 at 17:42)
Air Canada Jazz Bomabrdier Dash-8 (Seen On Taxiway Near T8 at 19:30)
Korean Air Cargo Boeing 747-400 (Parked next to a Katilla Air 747, seen around 17:00)

Thanks for your help.I may have some more still to come as well.

[MKY661]

OK I'm still working these out but I'm kinda cracking the JetBlue that was landing. It was inbound from Buffalo and had to do a go-around when I saw it. It was in this colour scheme:
http://www.airplane-pictures.net/images/uploaded-images/2012-7/28/227904.jpg