http://www.ethiopian-venture.org.uk
Series of research projects initiated in Ethiopia, one of which has been on famine foods.

http://www.iied.org/agri/proj_hh.html
The project aims to develop approaches to local level economic assessment, using a combination of Participatory Rural Appraisal (PRA) and economic concepts.

http://www.hort.purdue.edu/newcrop/faminefoods/ff_home.html
Famine food database.

http://www.rbgkew.org.uk/ceb/sepasal/
Survey of Economic Plants for Arid and Semi-Arid Lands - Wild plant database that can be logged in and used with a user name that can be requested.