Hi and welcome from Toronto...the blocks are very old..talk to a professional about how to finish them...a museum, or a guild, or someone who repairs antique quilts...

Welcome from CT

Thank you each and everyone for your in put about the old quilt squares. Your ideas gives me lots to think about!
Carron

Hello and Welcome from Germany!

Hi and welcome! Also in SoCal. Maybe you can lay them on black wool felt and frame them. Very pretty blocks and what a history.

Hello and welcome from England!

Hi from Ohio!

Hi Carron, welcome to the board!! If I get your question correctly you want to know if you would ruin them by finishing the handwork?? I don't think so at all!!!
If they were mine I would finish the handwork and then put them together and display in a special spot.
They should be enjoyed !! :)
They are so beautiful, glad you have such a wonderful family heirloom.

Welcome from Alaska. Beautiful! No clue how to bring it all together and not ruin the integrity.

I think I would simply lay them on a background, frame it (under glass) and document everything I know about them as they are somewhere on the back of the frame. The late 1800's? That's over 100 years old.