Since both APA208 and APA212 were both Permenente-built Haskell-class transports, laid down within 2 weeks of one another - I would be fairly confident that their as-launched (i.e. WWII) appearances would be similar. Of course from that point on ships begin to change. If the accuracy thing concerns you, you will have to go with other references. Otherwise - a set of hull numbers and a name change should do the trick
The question which you might need ask your wife of her father is when was he on the Talladaga? The Talladaga was decommissioned in 1969
Some late-life photos o fthe Talladaga on the Navsource site http://www.navsource.org/archives/10/03208.htm
seem to show an appearnce which is quite similar to the one photo of the Montrose (also a later life picture)
If you can't find a Revell Montrose APA, the boxing as the Randall is similar. Loose Cannon also makes a 1:700 scale Haskell-class
http://home.earthlink.net/~loosecannonproductions/index-amphib.html