Here are a few items I found searching Google:
On Etsy they are selling a Late 70's ticket holder: You are not allowed to view links.
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1960's Northwest Orient Airlines Ticket Holder: You are not allowed to view links.
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The tickets are separate from the envelops or holders.. you are confusing them.
I found NW Orient tickets from 1968-1982 that had that name box on the cover, and different airlines used the same type of ticket. (with different airline printed)
Mitchell showed us what his mother had saved from that night. He had the envelope and the copy of the ticket.
Also, the ticket that Mitchell showed me look like they are fed through a type set machine that types out some of the info on the ticket. If I remember correctly from pre-computer days, these tickets would be on a roll that would feed along a pinned bracket inside of a printer. If a cover is attached, how is it fed through?
Based on my personal experience with quite a few different airlines, the format for all (or at least most) airlines was an airline industry standard. The tickets for domestic travel (within the USA) may have had different numbers of "legs" depending on the number of plane changes in the original ticket. But the basic ticket format was an industry standards for reporting accounting information, etc..
The tickets were not in a roll, but in a linear type container. The imprinted information in the upper right hand corner of the tickets was put there by a stamping machine that the ticket agents operated. This was not a "printer" type operation but a "hammer" type activity. The imprinted information is what actually validated your ticket.
What we are discussing here in the Cooper case involves two separate individuals who, minutes apart, walked up to apparently separate ticket agents, at the same counter, and purchased simple one-way tickets from Portland to Seattle. This is exceptionally straight forward and there is nothing suspicious about it.
The ticket above for "Ward", I think it is, indicates that a round trip ticket was purchased but that neither the date out or back had been set. The information in the lower right hand corner is a credit or charge card of one kind or another. The imprint in the upper right hand corner appears to be dated July 14, 1982 and the imprint was probably applied in Dallas, Texas although the word "Dallas" is not readily visible.
There are quite a few variations in how tickets could be obtained and validated but, again, they have absolutely nothing to do with the Cooper case.