The picture you clicked illustrated a story in Astounding Science Fiction around 1951. It is believed to be written by author Murray Leinster who was well known for over 1500 short stories as well as articles, movies and radio shows. Recently published is “First Contacts, The Essential Murray Leinster” by NESFA Press.

More about this author can be found at:

http://en.wikipedia.org/wiki/Murray_Leinster

If you can supply any additional information about this author or story please let us know so that we can post it here.