Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Henry George:

"

After deciding against gold mining in British Columbia, George was hired as a printer for the newly created San Francisco Times.[1] He was able to immediately submit editorials for publication, including the popular What the Railroads Will Bring Us (1868),[2] which remained required reading in California schools for decades.[citation needed] George climbed the ranks of the Times, eventually becoming managing editor in the summer of 1867.[3][4]