I now have a HP LaserJet IIp Plus printer, (initially free, and I got it working at a cost about equal to buying a good used one, but that's another story)... anyhow, I am trying to find the "Optional Lower Cassette" that holds 250 sheets of paper and fits underneath the printer (instead of feeding them 20-30 at a time through the front door). No luck in the usual places. Does anyone have a "parts" IIp from which I can buy the cassette & paper tray? thanks Charles