when was shoes first released?

[Sarah Allen]

Hi,

I'm doing some last minute prep for my intro class on Shoes later this  
morning (11am PST) and I plan to do a brief history of computers (with  
content borrowed from: http://www.slideshare.net/BethAdamczyk/highlights-in-computer-history 
 ) and I want to add the invention of the Internet, Web, Ruby and  
finally Shoes.

Can anyone help me with the final bit of the timeline?  I can easily  
lookup most stuff, but for shoes I keep finding sites about footwear.

Thanks so much,
Sarah

http://www.ultrasaurus.com