Of course, here is Mary wearing the dress for Comparison -
One thing that I've noticed is that the lace bertha (wide collar) has been replaced here with fringe - if this is the original dress.... It is not known if this dress is still in the family's hands to this day -
Also found this beautiful necklace which Lincoln gave to Mary during their tenure in the White House:
Also Mary's "Mourning Suite" -- really rather gaudy for mourning - but it is beautiful - and according to the site, purchased at $350.00 and worth about $24,000 today.