After reading more about I1s tenders, it looks like they were initially delivered with a 90F82 tender then most received the 210F82a welded tenders before WWII. While other tenders were used, like the 110F82a from M1s, the 90F82 ans 210F82a seemed to be the I1s primary tenders. Not sure why the 90F82 tender was not included in the other list of Decapod tenders I used above. I added it.
Also, there are pre-war and post-war versions in the Lionel catalog, so make sure you get the one the best matches your era. Of the 598 built, around a 100 never were "modernized" so either one will work post war.
