I hope that you can help me please:

I'm a mexican musician and baroque music researcher.

In these days arrived to my hands a rare and magnificent document, sheet music composed by a mexican genius woman.

I have never had problems passing to actual musical notation the scores I work with, but I have a problem now, this is not baroque notation...

The facsimilar that I have consists of 4 pages, Soprano I part: http://www.freeimagehosting.net/image.php?e7e3141159.jpg, Soprano II part http://www.freeimagehosting.net/image.php?2da593afbb.jpg, Alto http://www.freeimagehosting.net/image.php?9709e1f827.jpg and Bass http://www.freeimagehosting.net/image.php?72487ec966.jpg

Could you help me giving me an idea of how transcribe it into actual notation?
There are no barlines, I see some crotchets (quarters) without stems, beside crotchets with stems, and minims (half) with flags! And about the rests, they are very confusing!

I tried to transcribe it "2:1" but, the minims (half) with flags do not help me, I don't know what to do!

Could you help me?

Arturo Escorza.