I looked around online for other panels and found several for 1978 and 1979 including the listings of the ones in the Standard Catalog. I was also able to find uncut sheet images from 1978 and 1979. All of the panels I saw for the '79s fall on two sheets, so I'm guessing that you could figure out what other panels might be out there. I was only able to find one '78 sheet that matched any panels, but I would suspect that all the other panels I saw might be on the same sheet. It probably wouldn't be too hard to figure out the possible panels if you had scans of each 132 card sheet Topps used. The six-card panels do seem to leave an unused row. I circled panels I found in red on the sheet.
6 panels
3 panels
2 panels
