A directory page is a clue that does not look like one. Somewhere in a column of three hundred names is the one number the characters need, and the table has to find it the way anyone would: by reading.
A running head across the top — the guide words, the directory, the place and year, the page number — and four columns under it, filled from a palette of blocks: listings under a category heading, a boxed listing, a display advertisement and a small notice. Any listing can be set bold, the way a business paid to have its name stand out. Drag the blocks between the columns until the page balances; an advertisement takes whatever room its column has left.
The classified skin is yellow stock from the late 1980s, bold headings and dotted leaders to every number. The 1920s skin is a telephone directory with exchange names in the numbers, and Eastern Bloc is a grey district subscriber list with the villages on manual exchanges. For fantasy there is a register of guilds and workshops listed by seal number, and for science fiction the services directory of a space station, printed only when the terminals are down.
Export is A4 at 300 DPI, as a PNG or a PDF. A single advertisement blown up to fill a page is an Advertisement, and the story that sends the characters looking for the number belongs in the Newspaper.