I brought some Ortho Lith to use in the pinhole still have a play testing speed and development so cut it down to 4x5 to try. Below is the result at iso6 developed in rodinal 1:150 and very light agitation. Ignore the rubbish on the scan as I didn't wash in very well.
If you can get a copy or have a copy of "The film developing handbook" read chapter 11 about document films. Should give a bit of information. Well done