I have it as R. Stanton Avery, who invented the first self-adhesive label back in 1935 and I have it confirmed by about 15 other sites.

In actual fact stamps are also considered as stickers so there could be a little confusion about it.

Here are some of the sites I found my info from as well as from my home 'old fashion' encyclopedia

Here

Here

Here

and Here

if you haven't already...try searching wikipedia...tons of info.  might be late for this project but maybe for future use.

www.wikipedia.org

thanks everyone.. thanks so much to you all

Skylee

http://www.averydennison.co.za/

Avery Dennison invented the world's first self-adhesive label...

Took a lot of searching but found this site....hope it helps

Have you tried google? inventor of stickers is what you might want to put to search. Hope this helps