Ian I imagine you are aware of the following comic cavalcade reprint giveawaysCarl Akeley...He Brought Us Africa

and this LARGE logo variant of the "Tomorrow - the world" issue

as opposed to the more common version ( although the dc index site uses the above version )

there are some books you may not have seen on the old forum thread

very obscure for some reason , this was included in a programme for a motorsports event & was listed in the magazines section of previews
Colour Front Cover - Black & White remainder variant on Mask giveaway # 1

American Cancer Society "Smoking is for squares" flyer c.1964

I presume you know about the 4 Alex Ross cover issues of tv guide featuring a Smallville comic strip

now there's some books you may be able to give me some info on
Wizard world wild times wildcats #0 - are there two variants of this from different cons ( other than the standard edition polybagged with wizard)

Colour variants on superman's buddy are listed by overstreet - have you seen any?

Is this Giant canadian item a comic?

Have you got this british giveaway pictured in one of Dennis Gifford's books?

and finally can you add to the list of parks which had versions of the six flags guide comic I know of :
Ohio; Over Georgia; Darien Lake; Great adventure & Wild Safari; St. Louis; Magic Mountain; Great America (25th anniversary); Kentucky Kingdom