Need a couple of horns, where can I find these?

[illinoiscentral]

I have a couple of horns I need for some Trainz. I have the video's with them in at their best. Would like to know two things, #1 what kind of horn is it?
#2 where can I find it?
Any help will be greatly appreciated!
http://www.youtube.com/watch?v=zp1w2eSllys
http://www.youtube.com/watch?v=WYkTJ1km220&NR=1
Thanks!