In case anyone is interested, I found the journal refills at Office Depot. The brand is FORAY (looks like an Office Depot brand). The item number is 852-290 for the refill for the 5x7 journal.
Oddly enough I can't find the refills on the Office Depot website, but I can find the journals that are refillable...
http://www.officedepot.com/a/product...r-Journal-5-x/
And I can't get the Live Chat to work to ask someone...