Private Carriers Album Pages

Could anyone tell me in which National Album supplement pages for the private air carriers (P. R. I. D. E., Western Airletter, etc.) were issued? I believe it would have been in the mid 1980s. I have contacted Amos Publishing with this query without any success. Also I had purchased a set of these pages a few years ago and subsequently lost them in a move and would like to replace them now that I have acquired a number of these stamps/labels.

For those 500+ person who have read this post, I recently purchased a 1984 National Album supplement. It contained the album pages for the above mentioned private carriers complete with Scott numbers. I assume then, listings for the these local air carriers would have appeared in the 1984 or 1985 Scott U.S. Specialized catalog. I have never been able to get this information from Amos publishing. Does anyone have the old catalogs which would verify this?

I have a 1982 Scott Specilized but can not locate any listing in the index for "local air carriers". Do your supplement pages give a letter prefex to the Scott #s?