Can anyone provide a timeline referencing when different moodels of Araya alloy rims were used?

I'm looking at when 7Bs, 7Cs, and 7Xs were used to make sure that projects stay period correct

Thanks,
Bill Nicholson

bill, good ????? i asked similar ? a long time ago and it didn't get any play. the only thing i think, i think ,i know is 7c came out in 79. i have alot of old magazines from that period, could probably investigate the 7x arrival? i too would like to know when 7b's first came out? also wienman, i have some of the 2.125 rims i'm wanting to put on something. they need a different length spoke and i'm having trouble getting the right ones maybe this time we can get answers?

It's all right here my friend...

Go to the museum>parts>rim comparison chart

That chart is nice but it doesn't show the years?