Lots of cool stuff in this picture. On the top two shelves to the left of the center arch I see clutch discs and pressure plates. On the racks in the center arch there are exhaust pipe sections, and what could be pieces of bright trim or rocker panel moldings. Just above and to the left of the telephone looks like rear axle bearings and grease seals.

I have a soft spot for Packard, as I had my first ever car ride in my parents' 1952 Packard 200 four-door sedan (bought new for $3800). It wouldn't have needed clutch parts, as it was was equipped with Packard's Ultramatic automatic transmission.