GM Horn Identification

[3macs1]

Is there a list available somewhere that can help with the identification of GM horns.I know most have a number and a date but I cannot find any reference to these numbers anywhere. An example is a pair of L/H with 361 on one and 362 on the other another set is L/H 9000 235 with a 2E9 date and 9000 226 with a 1E9 date. Have many more but no clue what they are for other than GM. What would chevelle and camaro use.I have parted so many cars over the years but just put the horns in a cabnit with no tags. Thanks for the help Joe