Free pile of kids' nature magazines all from 2000's: 

Animal Baby - (For toddlers)
http://www.magazine-agent.com/wild-animal-baby/magazine


Zoo Books (6 to 12 years)
http://www.zoobooks.com/

National Geographic Kids (6- 14 years)
https://w1.buysub.com/pubs/NG/NWO/CurrentKids09.jsp?cds_page_id=31650&cds_mag_code=NWO&id=1267316770717&lsid=30581822514043109&vid=3&cds_misc_5=EDITORIAL5

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-Heidi
Farragut Street