I have notice a couple of Wing Archery bows with the initials LR under the usual AMO info, here's an example of Raineman's 62 White Wing:
   

does anyone have any ideas what it means or who it was?

I cannot say for sure from what I see on my monitor, but it seems to me that the initials you refer to are L.h.; so my guess is that this is a left-handed bow. I suspect that you may have seen the same L.h. initials on the other bows, rather than the L.R. initials that you thought that you were seeing.

Ray

I think Ray may be correct it looks Lh to me also and I would have to say left hand.Maybe we could check with Jim and see if his bow is a lefty ??? bd

Thanks, that could be it, I'll PM Raineman to see if his is a lefty.

I checked the other left hander Wing bows I have, none have the LH but most are from the later AMF/HEAD years.