1988 HURD Casement Window replacement parts

We recently moved into a 1910 home with a 1988 addition that has HURD casement windows. At the moment, we only have one crank handle that we need to move around to operate four windows:


Two windows with openings measuring 1'8 ½" x 2'7 ½"


Two windows with openings measuring 2'5" x 5'8"


We would like to order three additional crank handles.
In addition, one of the bottom brackets (07866) on the smaller casement window is broken and needs to be replaced. Could you please provide the correct part numbers for these items?
It would also be very helpful if you could share a complete replacement parts list for these windows, as we anticipate needing additional parts over time.
Thank you so much for your assistance,
Kim