Boomerang

The index for Paul Halmos’ 1942 textbook Finite-Dimensional Vector Spaces contains this entry:

Hochschild, G. P., 198

It appears on page 198 of the index. Hochschild is mentioned nowhere else in the book.

Another peculiar index.

Keith Waterhouse asked, “Should not the Society of Indexers be known as Indexers, Society of, The?”