Baedeker and Murray produced impersonal, objective guides; works prior to this combined factual information and personal sentimental reflection. The availability of the books by Baedeker and Murray helped sharpen and formalize the complementary genre of the personal travelogue, which was freed from the burden of serving as a guide book. The Baedeker and Murray guide books were hugely popular and were standard resources for travelers well into the 20th century. As William Wetmore Story said in the 1860s, "Every Englishman abroad carries a Murray for information, and a Byron for sentiment, and finds out by them what he is to know and feel by every step."