LITS, that's awesome! By the way, you had me googling banjos the other day after your comment about your collection in the current USAA thread. It's amazing what can be learned on this forum!
Oh banjos. Banjos are America's instrument. Their origins are from Africa, in a gourd-based design, often with three strings. The banjo developed into what we think of as banjos now, in the 1800s. The late 1800s and early 1900s saw the biggest changes and by the early 1900s the design was pretty much set, with small changes made here and there.
The five-string banjo (which is the kind I play) is typically what people think of when they think about banjos. It's characterized by one short string and three longer strings. In the early 1900s, with the rise of jazz, the five-string banjo lost popularity to the four-string banjo (played with a pick like a guitar). It wasn't until the rise of bluegrass that the five-string banjo made a come-back. This is why original Gibson flat head five-strings from before WWII are rare and worth $100K-$250K.
Ok, enough about banjos. Books.
A Japanese man named Akira Tsumura collected thousands of banjos in the 1970s-1990s. He had a book made in 1984 called "Banjos - The Tsumura Collection" and two books made in 1993 called "One Thounsand and One Banjos - The Tsumura Collection" and "Banjo - The Tsumura Collection (1920-1940)." While these books appeal to a small segment of the population, some, especially the "1,001 banjos" book, command a premium. His collection had so many "one of a kind" banjos and raritiest, that the books are the only places you can find them all. The big 18 lb. "1001 banjos" had only 2,500 copies made, for a cost of $3.8 million (according to the Fretboard Journal). The later "Banjo - The Tsumura Collection (1920-1940)" was meant to cover the 116 banjos Tsumura had purchased since his big book was made. Only 250 copies were made.
Anyway, I have been able to collect the items associated with the collection, including the three books, a poster and two sets of playing cards. To my knowledge, that's all that exist in the collection (as in, I have one of each item), so I had it insured.
In the late 1990s Akira Tsumura was found guilty of white collar crimes. Most of his collection was seized by his company. Some of the minstrel-era banjos were donated to museums, others were sold off to various collectors around the world, and finally some were lost and destroyed. It's the sad ending to a fine collection and it makes the books about the collection that more desirable.