This listing is for an original Apple Computer, Inc. Developer Technical Support document set, consisting of Apple II and Macintosh Technical Notes from 1990–1991, distributed directly by Apple to registered developers.

These documents were never retail products and were issued internally through Apple Developer / APDA channels, making them highly desirable to collectors of early Apple history, software development, and pre-internet technical documentation.

📚 CONTENTS INCLUDE

Apple II Technical Notes
- “About Apple II Technical Notes”
- Dated May 1990 and March 1991
Macintosh Technical Notes
- “About Macintosh Technical Notes”
- Dated February 1991
Supplemental technical notes covering:
- System software revisions
- File types & resource handling
- Developer APIs
- Sample code references
- Apple II GS / GS-OS references
- Macintosh system internals

🗂 FORMAT & CONDITION

Original hole-punched Apple developer pages
Still sealed in original Apple plastic sleeves
No writing, highlighting, or missing pages
Paper is clean and flat with normal age toning
Plastic sleeves show light storage wear
Includes original Apple mailing/document sleeves (shown in photos)

🧠 WHY THIS MATTERS TO COLLECTORS

Authentic Apple developer documentation from the transition era (Apple II → Macintosh)
Primary-source material used by real developers in the late 80s / early 90s
Much harder to find complete, sealed sets versus loose photocopies
Excellent archival or display piece for:
- Apple historians
- Vintage computer collectors
- Software development archives
- Museums or personal collections

⚠️ IMPORTANT NOTES

Documents only — no disks, no hardware, no manuals beyond what is shown
Sold as a collectible / archival item
Please review all photos carefully; photos are part of the description

Apple II & Macintosh Technical Notes Developer Support Docs Lot 1990–1991

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