Whoa ... you many not want to bother planting them !
Most of the roses sold by J & P back when your mother got the roses were budded to a root stock called 'Dr. Huey'. Dr. H has deep red blooms. That would explain the once blooming thing, too because it only blooms once a year on old wood.
Just in case you don't know, if the plant budded to the root stock dies or is taken over by the more vigorous root stock, you end up with just root stock and no longer have the named rose .. i.e. 'Tropicana', 'Mister Lincoln' and 'Peace'. You just have a root stock that has red blooms once a year.
Dr. H. was used as root stock because it is very, very good at growing roots and accepted almost anything that was budded to it. It is supposed to be hardy to zone 6, but that can be iffy.
It is a pretty rose, but it may not be the rose that your mother really likes.
Here is a link to the 'Dr. Huey' rose page in the ATP database:
Rose (Rosa 'Dr. Huey')
Here are a couple of photos from that page:
If you don't want to plant a once bloomer, I think you need to purchase a new roses for your mother.
