1. Collection Inventory & Normalization Framework To establish archival control over the 40 travel postcards within the 10-hour budget, items are ingested into a standardized schema. Items are assigned persistent identifiers based on acquisition lot (LOT1 for the 1930s rail employee estate lot; LOT2 for the second estate lot). Data Normalization Schema Metadata Field Archival Standard / Format Rules & Constraints Item ID PC-2026-LOT[1|2]-[001..040] Unique identifier assigned sequentially upon physical triage. Physical Description Controlled Vocabulary Broad physical class: Real Photo Postcard (RPPC), Photomechanical Color Lithograph, Monochrome Halftone. Date Claim YYYY-MM-DD or YYYY-MM or UNKNOWN Recorded strictly from explicit physical evidence (handwritten postmark/inscription). Do not infer. Creator Claim Text String or UNKNOWN Recorded strictly from printed publisher/printer marks or logos. Acquisition Path LOT1-RAIL-ESTATE or LOT2-ESTATE-UNKNOWN High-level provenance source lot. Note lack of individual item receipts. Marks Structured Transcription Verbatim text of handwritten notes, stamps, postmarks, printer codes, or logos. Duplicates Group GRP-[01..03] or NONE Associates identical or near-duplicate printing impressions. Condition Controlled Vocabulary Stable, Silvering/Mirroring (5 items), Edge Wear, Fragile. Current Enclosure UNSLEEVED or POLYESTER-SLEEVE Physical housing state. Duplicate and Near-Duplicate Grouping Protocol Duplicates must be preserved as distinct physical items while linked conceptually to prevent redundant research. Group Assignment: Duplicate cards (6 items total, forming pairs or small sets) share a Duplicates Group ID (GRP-01, GRP-02, etc.). Variant Preservation: Cards printed from the same matrix or negative are distinguished by secondary physical evidence recorded in item-level records: Variant A: Blank verso, pristine emulsion. Variant B: Cancelled postmark, handwritten message, or distinct publisher production code. Scanning Priority: Digitization prioritizes the most complete/pristine visual copy (recto) while ensuring all annotated versos are scanned to capture unique transcriptions. 2. Provenance & Attribution Register Every contextual claim associated with this collection is evaluated against physical and documentary evidence. Attribution Grades Attribution Target Evidence Source Assigned Grade Justification & Evidence 1930s Rail Employee Ownership (Lot 1) Informal family note PLAUSIBLE Supported solely by non-contemporaneous hearsay (family note). Lacks employment logs, official receipts, or personal identity marks. Individual Card Dates (3 cards) Inscribed handwritten dates / postmarks CORROBORATED Direct physical inscription on card surface. Requires verification against postmark date formats and publisher activity dates. Individual Card Dates (37 cards) None UNKNOWN No dates inscribed; no primary sales documentation exists. Geographic Locations Seller spreadsheet (incomplete city names) CONFLICTED Seller spreadsheet entries are truncated/incomplete and lack authority control; must be verified against card captions. Card Creators / Publishers Printed publisher logos / marks DOCUMENTED Printed directly on item during manufacture (where present). Unmarked cards remain UNKNOWN. Legal Ownership History Bulk purchase from 2 estate lots PLAUSIBLE Good-faith acquisition via estate sale; individual prior chain of custody is undocumented (no individual item receipts). Provenance Gap Register [GAP-01] Missing Individual Item Receipts ├─ Impact: Chain of custody prior to estate sale is undocumented. └─ Resolution: Record acquisition as "Bulk Estate Purchase"; assign PLAUSIBLE baseline title. [GAP-02] Unverified Rail Employee Context (Lot 1) ├─ Impact: Relationship between cards and 1930s rail network is unconfirmed. └─ Resolution: Cross-reference geographic subjects in Lot 1 with 1930s rail lines during low-cost research. [GAP-03] Truncated Geographic Metadata ├─ Impact: Incomplete city names in seller spreadsheet prevent precise subject indexing. └─ Resolution: Transcribe partial names verbatim; flag for visual subject identification. 3. Prioritized Task Matrix To maximize impact within the 10-hour volunteer budget, processing steps are prioritized based on physical risk, uniqueness, evidentiary value, rights uncertainty, and handling cost. Priority Item Subset / Target Key Risk / Characteristic Stabilization Action Digitization / Transcription Action Budget Alloc. 1 5 Cards with Fragile Silvering Active silver mirroring / emulsion vulnerability; high visual uniqueness (RPPCs). Immediately place in inert polyester sleeves. Handle by edges only using powder-free nitrile gloves. High-resolution scan through sleeve or flatbed scan using protective spacer to avoid friction. 2.5 hrs 2 3 Cards with Handwritten Dates High evidentiary value for timeline anchoring; unique manuscript annotations. Sleeve in clear polyester to protect ink from abrasion and skin oils. Capture 600 DPI recto/verso master scans; full verbatim text transcription of handwritten notes. 1.5 hrs 3 6 Duplicate / Near-Duplicate Cards Medium uniqueness; risk of redundant labor or confusing identical items. Group physical cards in adjacent sleeves; mark individual variants (V01, V02). Scan 1 representative primary recto master; scan all distinct versos containing annotations/marks. 1.5 hrs 4 Remaining 26 Undated / Unsilvered Cards Standard physical stability; bulk photomechanical prints; moderate handling risk. Housing in protective polyester sleeves in sequential Item ID order. Rapid flatbed batch scanning (600 DPI recto/verso); baseline metadata entry in spreadsheet. 3.5 hrs 5 Metadata Alignment & Research Incomplete seller city names; unverified rail employee attribution. N/A (Digital / Administrative task). Reconcile seller spreadsheet against scanned visual captions; log unverified gaps in register. 1.0 hr 4. Digitization Protocol, Scan Naming & Handling Sequence Handling & Conservation Guidance Environment: Clean, clutter-free work surface covered with acid-free blotter paper. Gloves (nitrile) required for silvered photo cards; clean dry hands or gloves for printed card stock. Mechanical Protection: Do not clean, erase, or chemically treat surfaces. Do not strip tape or adhesive. Fragile/silvered cards must be stored individually in archival polyester sleeves. Scanning Limits: Flatbed scanner only. Place cards glass-side down gently. For silvered/fragile emulsion, ensure flatbed glass is clean and free of static charge; scan inside a high-transparency sleeve if emulsion flaking is observed. Canonical Scan Naming Scheme Filenames must be machine-readable, globally unique, and reflect provenance hierarchy: Format: PC2026_[LOT]_[ITEM_ID]_[VARIANT]_[SIDE].[EXT] PC2026: Collection designator. LOT1 / LOT2: Acquisition path. 001–040: Sequential 3-digit item number. V01–V99: Variant indicator (V01 for primary/unique, V02 for duplicate physical instance). r / v: Side indicator (r = recto/front, v = verso/back). tif / jpg: File format (.tif for 600 DPI uncompressed preservation master; .jpg for 300 DPI web access derivative). Examples: PC2026_LOT1_004_V01_r.tif (Lot 1, Item 004, Recto Master) PC2026_LOT1_004_V01_v.tif (Lot 1, Item 004, Verso Master containing handwritten date) PC2026_LOT2_012_V02_r.jpg (Lot 2, Item 012, Duplicate Variant 2, Recto Access Image) 10-Hour Volunteer Handling Sequence [0.0 - 0.5 hrs] SETUP & PREPARATION ├─ Workspace setup: Clean flatbed glass, prep polyester sleeves, log station. └─ Sort 40 cards by physical state: Silvered (5), Inscribed (3), Duplicates (6), Standard (26). [0.5 - 3.0 hrs] PHASE 1: STABILIZATION & HIGH-PRIORITY SCANNING ├─ Enclose 5 silvered cards in polyester sleeves immediately. ├─ Scan 5 silvered cards (Recto/Verso @ 600 DPI TIFF). └─ Scan 3 handwritten-dated cards (Recto/Verso @ 600 DPI TIFF). [3.0 - 4.5 hrs] PHASE 2: DUPLICATE & VARIANT PROCESSING ├─ Match duplicate sets; assign group IDs and variant suffixes (V01, V02). └─ Digitze duplicate sets (Master recto for pristine card; all annotated versos). [4.5 - 8.0 hrs] PHASE 3: BULK DIGITIZATION & HOUSING ├─ Sleeve remaining 26 cards in polyester enclosures. └─ Batch flatbed scanning of remaining cards (Recto/Verso). File under strict naming syntax. [8.0 - 9.0 hrs] PHASE 4: TRANSCRIPTION & METADATA ENTRY ├─ Transcribe 3 handwritten dates and explicit publisher marks into master inventory. └─ Cross-reference incomplete seller city names with clear visual text on cards. [9.0 - 10.0 hrs] PHASE 5: QUALITY CONTROL & AUDIT ├─ Verify file naming against master inventory. ├─ Pack sleeved collection in archival storage box in sequential ID order. └─ Apply Stopping Rule and lock metadata catalog. 5. Targeted Research Actions Within the remaining allocated time budget, volunteers must complete specific, non-speculative metadata reconciliation tasks: City Name Resolution: Compare incomplete seller spreadsheet strings against printed card titles/captions. Record expanded names in a dedicated field (Normalized City Name) while retaining raw seller text in Raw Seller Metadata. Publisher Mark Identification: Match printed logos or printer codes against standard open-access postcard publisher directories (e.g., Curt Teich date codes, Detroit Publishing Co. marks) only if visible on the physical item. Rail Line Route Alignment: Cross-reference the verified geographic locations from Lot 1 against major 1930s passenger rail route maps to test the plausible "rail employee" provenance hypothesis without inventing specific employee records. 6. Boundary Conditions & Stopping Rules To prevent scope creep, loss of integrity, or physical harm to the items, volunteers must adhere to the following strict stopping rules: 10-Hour Hard Ceiling: All physical handling, scanning, and metadata entry halts immediately at the 10.0-hour mark. Any unprocessed cards remain safely housed in polyester sleeves with baseline IDs only. Deterioration Threshold: If handling any card causes active emulsion flaking, paper cracking, or surface shedding, stop scanning that item immediately. Enclose in polyester, log condition as FRAGILE-HEAVY-DAMAGE, and skip flatbed exposure. Attribution Floor: Do NOT assign definitive dates, artists, photographers, or copyright owners based on stylistic intuition or unverified internet listings. If primary physical evidence is lacking, the field MUST remain UNKNOWN. Conservation Limit: Volunteers are forbidden from applying tapes, liquids, solvents, or attempt physical surface cleaning. Treatment is strictly limited to passive stabilization via polyester sleeving.