Kurabo's Telegraph Code from 1890

I found an early telegraph code (1890) of Kurabo (倉敷紡績) on the web and added a reference to it in
日本の電信暗号 (in Japanese).

Mitsubishi's Codebook (1929)

I got a copy of Mitsubishi's telegraph codebook (1929), titled Wabun-Denshin-Ango (Telegraph Code for Japanese Text). I placed a search for a telegraph code on a second-hand book network without purpose and had the luck to hit on this item.
It conforms to the common codebooks at the time, with five-letter code groups and three-kana code groups assigned to the entries for plaintext in Japanese. The five-letter code groups are constructed according to four mutilation tables adapted to the new telegraph regulations of 1928.

The codebook is now described in
Japanese Telegraph Codes
Mutilation Table and Error-Correcting Code Before Computer Age
日本の電信暗号
検誤表――コンピューター以前の誤り訂正符号

Regularity in Louis XIV's Diplomatic Ciphers

Some years ago, I pointed out some ciphers from Louis XIV's time can be arranged in a table to reveal alphabetical arrangement of elements. (This characteristic was known to John Wallis, contemporary Engklish codebreaker.) I have now added images to specifically show such regularity for two ciphers from 1689 (in addition to similar images for 1693 and 1702 ciphers) in
"French Ciphers during the Reign of Louis XIV" and
"Specimens of French Cipher (1689) Printed in John Wallis' Opera Mathematica".