Hill's Manual of Social and Business Forms by Thomas E. Hill
A 19th-century book full of advice very little of which you want to take. For instance, the form of writing an address on an envelope has entirely changed. . . which is where the interest lies.
Reading Phoebe And Her Unicorn from the beginning, online, is -- interesting.
You see, after several years, it got launched as a newspaper comic. Which meant a whole pile of new readers had to be introduced from the start.
Some repeat comics, some using the same gag, some comics depicting the same events -- a distinct tendency to compress into one or two comics something that was a whole story arc earlier. Like the spelling bee arc that introduced Max.