Moody returned in 1909 with a new publication focused solely on railroad bonds, "Analysis of Railroad Investments", and a new company, Moody's Analyses Publishing Company. While Moody acknowledged that the concept of bond ratings "was not entirely original" with him—he credited early bond rating efforts in Vienna and Berlin as inspiration—he was the first to publish them widely, in an accessible format. Moody was also the first to charge subscription fees to investors. In 1913 he expanded the manual's focus to include industrial firms and utilities; the new "Moody's Manual" offered ratings of public securities, indicated by a letter-rating system borrowed from mercantile credit-reporting firms. The following year, Moody incorporated the company as Moody's Investors Service. Other rating companies followed over the next few years, including the antecedents of the "Big Three" credit rating agencies: Poor's in 1916, Standard Statistics Company in 1922, and the Fitch Publishing Company in 1924.