Hollerith founded the Tabulating Machine Company, which became the Computing-Tabulating-Recording Company (CTR), which became International Business Machines Corporation (IBM). These are the same thing, admittedly adding other businesses along the way. (Hence, IBM includes the invention of the tabulating punch-card in its company history.) So, after 1924, it's IBM, but this didn't stop people from talking about Hollerith cards, even in the 1950s. Here, it was used to designate the pre-computer era use with punch-card appliances.
I didn't realize IBM called their own cards Hollerith cards.
They changed the format to 80x10 with rectangular punches in 1928, naming it the IBM Computer Card. They modified it to 80x12 in 1930. IBM themselves distinguish between Hollerith's cards and IBM cards, but I suppose they were the same physical size and old names die hard.
