British dragonfly design from Encyclopedia of Design. New York City: Hart Publishing Company. Print. ISBN 0-8055-1276-4. Page 89. Encyclopedia bears the notice, "All these pictures are in the public domain"
蜻蜓
animal、animals、birds - Hummingbird、dragonflies、dragonfly、insect、insects
動物、動物、鳥 - 蜂鳥、蜻蜓、蜻蜓、昆蟲、昆蟲
資料來源：openclipart ( https://openclipart.org/ )