[MANGA] Jintaro Sandogasa [1968]

Title: Jintaro Sandogasa (じん太郎三度笠)
Original date of publication: 1968-02-04 ~ 1968-03-03
Original publication: Shukan Shonen Magazine (週刊少年マガジン)
Original publisher: Kodansha (講談社)
Digital version: Yes
Included in:

1971-01-13, Tokushu Kikkai-kun 4, Shukan Shonen Magazine Zokan, Kodansha
http://www.mazingerz.com/magazine/kodanshaETC.html#ZOKAN

1971-05-31, Jintaro Sandogasa, Jump Comics, Shueisha
http://www.mazingerz.com/GAG/JINTARO.html

1975-09-10; Bakuratsu Kyoshitsu, Power Comics, Futabasha
http://www.mazingerz.com/GAG/BAKURATU.html

1987-10-08; Nagai Go Manga Daizenshu #1, Tairiku Shobo, ISBN 4803312001, ISBN-13 978-4803312003
http://www.mazingerz.com/compilation/compilationJPG.html

1999-04-01; Nagai Gokaban Selection #7: Samurai Japan, Media Factory, ISBN 488991823X, ISBN-13 978-4889918236
http://www.mazingerz.com/COMICLIST/GOKA.html

2007-12-26, Nagai Go Debut 40 Shunen Kinen Senshu #1, Nikkan Sports, ISBN 978-4817202550
http://www.mazingerz.com/DYNAMIC/30th.html#senshu
-ebook-

2000-12-27; Nagai Go Tanpenshu #1: Jigoku no Kenman
https://ebookjapan.yahoo.co.jp/books/100597/A000001926/

The second serialization of Go Nagai with five entries in total, it produced a tankobon. There is a rare deal with the Kikkai-kun Special #4 in which all chapters are credited to Dynamic Pro instead of Nagai and have different chapter names (the ebook version no longer has chapter names). Despite how short the series is, it seems that the impetus to publish the tankobon in the first place was due to Harenchi Gakuen, which is why Shueisha picked up the rights to publish it despite being originally published by Kodansha. By this time, Dynamic Productions was already established, meaning Nagai became the owner of the rights of publications of his own work.

Links:
http://www.mazingerz.com/GAG/JINTARO.html
https://ebookjapan.yahoo.co.jp/content/author/259/nenpyo.html