I got high res versions of the rozandall plans (3 sheets) that are posted on the Nieuport page here:
http://mars.ark.com/~mdf/N_17d.html
the files were not great - but large enough to read the dimensions.
the plans were excelent for what I wanted to do, which was to make a detailed 3D cad model.
in fact, they are the single best resource i've ever found for this kind of work.
but i can not say if they would be adequate for building a repro.
i also had copies of the hardesty plans - and I remember suspecting that they were probably based on rozendall.
the math matched up a little too perfectly - but I can not say for sure.
however there were some bits and pieces on the hardesty plans that weren't on the rozendall plans.