Please look closely at photos - this is the exact item you are purchasing. Listing images has been captured by aiming a cell phone directly at light table. Most slides in the group will be of higher quality than what is depicted in the listing.  This came from an estate sale in Denver, Colorado.  I was unable to identify the zoo these photos were taken but it MIGHT be Denver Zoo.  The year the photos was taken has been verified (it's printed on each slide)

Shipping is a flat $3.99 for all winning auctions.