Question about making cards and what glue to use

[foto-phreak.livejournal.com]

I tried the "This to that" but there was no choice for Photos. (Wow, I haven't posted in like a year!!)

anyway, i recently was invited to set up a booth at a craft fair. this would be my first ever! I haven't even made any crafts in almost a year, besides some random gifts, because i've been focusing so much on my photography

so i've decided besides doing polymer clay crafts, i want to bring my photography into my crafting. i have a couple boxes of acid free/lignen free envelopes and blank cards that i bought years ago and never did anything with. i want to print out my photos (professionally, on archive quality paper) and attach them to the front of the cards

i'd originally thought about using photo corners, but i want them to stay on really well and maybe be able to be framed later

so what kind of glue can i use that wont make the photo to wet or ruin it, and won't break it down over time..but will stick!

would an acid-free glue stick be enough?