I recently added a paragraph to the Community Translation Policy for The Linux Command Line as follows:
Be aware that once you are approved for performing the translation I will add your name and email address to the "Books" page on LinuxCommand.org so that others can contact you regarding your progress and perhaps offer you assistance in the translation.
I am hoping that with change I can get some of the translations moving. Some of them have been "in progress" for more than 5 years and it would be great if they got finished.
I will be making the change to the "Books" page soon, so keep an eye out for your chance to contact one of the translation team to offer help or encouragement.