New entry:
RCA COSMAC Microtutor with 1801 COSMAC chipset (became 1802 microprocessor). It's small and rare. The museum has one. Dates to 1974 probably. Other reasons:
First CMOS microprocessor, which matters because many subsequent microprocessor used CMOS to reduce power. RCA created the CMOS process for digital logic chips and then for the COSMAC.
One of the first microprocessor development products from RCA. The COSMAC microprocessor was developed here in New Jersey. Likely the first microprocessor in space. May be the first microprocessor for emissions controls in cars (Chrysler).
Direct predecessor of the "COSMAC ELF", a popular you-wire-it COSMAC design by the lead COSMAC developer Joseph Weisbecker; published in Popular Electronics. Many many versions of the ELF have been created and produced every decade since, to the present day.
Used in RCA video game and video terminal products (not that popular but known to collectors of early video game computers).
All good points. I think I'd take out the Compaq Portable. Yes it has some claims-to-fame as an early PC-compatible, but we'll already have an Osborne and a mid-80s compatible desktop in the exhibit.