Yeah, come to think of it, I was assuming THREE of you, the last is yet to speak up. For what it's worth, these are the ones I DO have the covers to, and their contents:
Issue 1 - Pizza of the Damned, Frankenstimpy, El Supremo Ren
Issue 2 - Kid Stimpy, The Organs of Doom
Issue 3 - (I don't have this one, but my cousin did, had something to do with them going into space...)
Issue 4 - ???
Issue 5 - Espresso Yourself, Wakka Makke Hoek Mekka Stimpy Ho!
Issue 6 - ???
Issue 7 - Ren & Stimpy's Casting Couch, U.S.Ohhhhh No!, All Things Strange & Wet,
Issue 8 - Bug Out, Pool O'Fools, Ambulance Chasers
Issue 9 - The King and We, Mars Needs Velcro
Issue 10 - Black Mail White Christmas Green Moulah, The Good The Bad and The Stimpy
Issue 11 - Now You See 'Em, In The Dark, Waiting for a Dog, Waiter Called Godot, Nobody's Home, Duck and Cover
Issue 12 - Obedience School, I'm The Cat, Baby Sitters
Issue 13 - Late Night with Muddy Mudskipper, Book of Records
Issue 14 - ???
Issue 15 - Are We There Yet?, Box Tops
Issue 16 - This Year's Model, Royal Canadian Kilted Yaksmen, El Supremo Ren (again!)
Huh... Only now do I realise I have all but one issue, which means the "mystery" ones (without covers) must be either issues 4, 6 or 14. I'll get to the bottom of this, don't worry.