Treasure: Books of Gold Leaf

Just got an email asking for ideas on what to do with several books of 23k gold leaf. Depending on the thickness of the gold, here are some ideas:

• Gilding on a lot of surfaces (put down glue, wait for it to get tacky, put leaf on, dry, brush off spare leaf)
• Keum-boo (heat fine or depleted sterling silver to 600 degrees or so and then burnish gold leaf to it)
• Tooling book covers (blind tool line with hot tool, paint with glare – glorified egg whites, apply gold leaf, dry and brush off spare leaf)
• Applying under transparent enamels
• You could always melt it down in a crucible with borax and then roll out the ingot to make your own gold sheet.

The original email mentioned working with silver sheet, so I’m thinking keum-boo is the answer to her question. Celie Fago did an excellent book on it. Here’s a link to it on Amazon:
Keum-boo on Silver Techniques for Applying 24k Gold To Silver, By Celie Fago