Accordion methods with fingering

[Deleted member 48]

In school we used some accordion methods like:
Cambieri/Fugazza/Melocchi: Metodo per fisarmonica (volumes 1 and 2), The version we used had the text in Italian with translation in English.
The fingerings in this method are for piano accordion and also for C-system CBA.
http://www.amazon.com/s?ie=UTF8&fie...=1&rh=n:283155,p_27:Cambieri/Fugazza/Melocchi

Also Elsbeth Moser: Das Knopfakkordeon C-Griff. Ein systematischer Weg
Text in German, for c-system CBA
http://www.stretta-music.com/nl/moser-das-knopfakkordeon-c-griff-nr-108710.html

Very good (but only in Russian):
Pjotr Londonov: B-system bayan tutor (with lots of Russian folk tunes as basic learning material)
Arkadi Bassurmanov: Russian piano accordion tutor (also based on Russian folk tunes for learning)
A. Onegin: B-system bayan tutor
G. Shakhov: Fingerings on the bayan and the piano accordion

Here is a Finnish webshop with Russian bayan (B-system CBA) and piano accordion tutors:
http://ruslania.com/sheetmusic/bycategory/34/sheet-music-button-accordion-bayan-piano-accordion
Also lots of Russian sheet music for bayan and accordion, well organised and good package delivery. In the past I used this webshop to get Russian sheet music, because their customer service is fluent in English and other languages. I think the shop was in Helsinki.

What are your favorite C-system, B-system and piano accordion tutors?