Could you help us to identify these unknown Vittali`s?

Click on the pictures to see an enlargement

Most people have pictures in the house, portraying people, of whom they have no notion who they are.( is this the case in your house?) Our parents and grandparents, who could have answered our questions, are long gone. Not everybody is interested in those portraits. Most of the time, not knowing what to do with them, those often-faint images end up in the trash can. If we don’t throw them away our children surely will. A pity, because each and every picture represents a piece of history.  A history to which the Vittali`s too have made their contribution.  

Betty Vittali, daughter of the late PW Vittali from the Weesperstraat, owns the pictures shown above. Based on the quality of the paper, composition and clothing we believe that the picture on the left was made around 1920. The picture on the right was probably taken a bit later approximately 1930. We are sure all these ladies are Vittali`s. The question is what was their first name. Who’s daughters are they? To whom where they married? Do you have an answer?