How to take a selfie in 1912
In case you’re curious about the camera featured in the ad, it’s most likely an ANSCO No. 3A Folding Buster Brown, which took postcard-sized photos on roll film and launched around 1912 or 1913. Redbellows.co.uk also tells us that the wooden, horizontal style folding camera body was covered in black imitation leather and was equipped with a leather handle on one end. The removable back also has the patent date (September 20, 1910) stamped. Interestingly, the viewfinder is on the baseboard, and the focus setting swings in an arc to pre-set the distance on the lens... More here.
Just a little cumbersome.