I don't know if you are aware of the actual size of the film (3 1/4" x 5 1/2", if I recall correctly). I don't know of any other source. Some people (me included) re-spool their own obsolete formats from cut down cirkut film or aerial film, which is difficult to find and only available in large, expensive rolls. This is a big project. It is also a bit tricky to develop the film, although it can be done by see-sawing it through the chemicals. It is a large enough format to make decent contact prints. One can use paper negatives cut to size, or orthochromatic film in single sheets cut to size under an appropriate safe-light, or panchromatic sheet film in the dark - also a lot of work. It depends on the recipient of the gift. Would they be happy doing all this? If they have a darkroom and enjoy a challenge, it could be a lot of fun.
Just some thoughts.