Metropolitan NY Library Council has a libguide (bibliography) on digitization. The guide include links on planning, image manipulation, copyright and more. Missing is information on software (collection management systems). Currently, METRO is using CONTENTdm and Omeka, although some if its members may be using other software.
I believe that this guide was recently updated, which is always good to see. Often resource lists are placed online and then forgotten which leads to broken links and outdated information.
METRO has been very active in digitization for a number of years. It recently released its book Digitization in the Real World, which contains case studies of small and medium-size organizations that have embarked on digitization program.