Variations of the Letter M, and Other Metro Logos of the World [c/o kottke.org] Oh boy! I love this! I'm such a closet transport geek. #link 2005.08.01 @ 19:38 IST // Aux // You were reading Variations of the Letter M, a link posted with comment by MacDara Conroy. It’s filed under Aux and was published in August 2005. If you liked what you read here, you can follow this site via its web feed, and find many more entries in the archive. You can also buy me a Ko-fi.