tools for reverse engineering schematics from boards?

I've got a bunch of Nuclear Data peripheral circuit boards that I need to reverse engineer. They are simple circuit boards with all the tracings visible (i.e. no internal layers) and the parts are all 7400 series logic in standard DIP packaging. If I were to do this manually, I would take high resolution photographs of both sides of the board. From the photographs, I would try to recreate engineering drawings: part placement and circuit topology. I'm wondering what kind of tools are out there that would assist in this. Could I process the photos to extract the topology of the printed circuit traces? Can I correlate this with image recognition of the part packages and combine them to product a netlist? I'd appreciate hearing any experiences from others that have reverse engineered circuitry. -- "The Direct3D Graphics Pipeline" -- DirectX 9 version available for download <http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/> Legalize Adulthood! <http://legalizeadulthood.wordpress.com>