The following is a link to six scanned pages with text and illustrations that relate to professional cutting and styling of beards and moustaches. Of particular interest to this forum is Moustache Curling and Cutting - pages 122 and 124, unfortunately page 123 is not included.
There's no indication as to the date of these pages. No doubt the history buffs among us can decifer the clues within the text and styles. Safety razors had been introduced and they refer to pre-decimal currency - charging an extra shilling or sixpence for moustache curling. http://www.sepiachord.com/menhair.htm