The Notre Dame continuity error, we all assume it is referring to the Cathedral and the recent devastating fire. What if it isn’t?
There is only the reference to Notre Dame, but it isn’t the only Notre Dame, there is the University at South Bend Indiana, whose main building and library were devastated by a then famous fire in 1879. The recent Cathedral Fire resulted in a substantial donation to the restoration fund by the University and quite a few news stories linked the two fires. It is not unlikely that Jim came across these news articles. The pre- fire main building matches the brief description Jim gives of Raith Manor much better than the Cathedral.
Indiana is of course next to Illinois but why Harry is knowledgeable about the architectural history of a Catholic university in a neighbouring state is any ones guess, unless St Mary’s got him interested in the subject of catholic religious architecture in the lakes region of which both are noteworthy examples.
On this basis there is no continuity error on Jim’s part, but worse he may have been deliberately vague to troll his readership on this point. If so he succeeded.