The London AMICA convention souvenir roll was done by Rex Lawson.
He himself applied the lyrics to the rolls.

Rex created a font that mimicked the stencil type used on rolls,
then made a very long document containing the lyrics.  He told me
he used a consumer grade wide carriage dot-matrix printer that takes
wide green-bar paper.  He fed the rolls though using only it's existing
platen as the driver.  I think he made a feeder spool, but that was the
extent of the 'customization'.

Yes, a few rolls went astray or slipped, and they were trashed --
more than he'd care for, but the job was eventually completed (after
the 11th hour; some attendees had to wait until their roll was
printed!).  I remember him telling me that each roll took about 40
minutes to print, leaving you with the roll fan-folded on the floor
which you'd then re-spool.

A cheap solution and definitely a labor of love!

Karl Ellison