Microbes From Space by John Russel Fearn

There was no reason for buildings to fall, yet they did, filled with a weird murmuring... 

A science ficton classic, first published in the July 1939 issue of Amazing Stories magazine.

John Russell Fearn (1908–1960) was a British author and one of the first British writers to appear in American pulp science fiction magazines. Prolific author, he published his novels also as Vargo Statten and with various pseudonyms such as Thornton Ayre, Polton Cross, Geoffrey Armstrong, John Cotton, Dennis Clive, Ephriam Winiki, Astron Del Martia and others.

Fearn was a prolific writer who wrote Westerns and crime fiction as well as science fiction. His writing appeared under numerous pseudonyms. He wrote series like Adam Quirke, Clayton Drew, Golden Amazon, and Herbert. At times these drew on the pulp traditions of Edgar Rice Burroughs.