diff --git a/TODO.md b/TODO.md
index 5eaf390..b5c5ed6 100644
--- a/TODO.md
+++ b/TODO.md
@@ -5252,3 +5252,33 @@ branch (demoted case) and `getDayLabel`'s final fallback (winning-outright case)
 in `tests/calendar/ember-days.test.ts` cover both. `npm test` (2024 passed) and `tsc --noEmit`
 both pass.
 
+**Second follow-on, same session**: user then flagged `/vu/2026-09-18/matins` (Ember Friday,
+commemorated) showing the Judith reading under a bare "Reading" heading. Real root cause, and a
+much broader bug than just Judith: `data/hours/bible-plan/*.yml`'s ~390-row TSV import uses
+English-style book abbreviations (`jdt`, `1kgs`, `luke`, ...) for the ~30 books where that
+diverges from this store's canonical Vulgate-numbering form (`jdth`, `3reg`, `luc`, ...) —
+`scripture/index.ts`'s own `BOOK_ALIASES` already normalizes this for verse-*text* lookup, but
+`bible-plan.ts`'s incipit (`bible-book-incipits.ts`) and responsory (`matins-responsories.ts`)
+lookups both used the raw, unaliased abbreviation, silently missing on any canonically-keyed
+book and falling back to the generic "Reading" heading. The 3 Gospel aliases (`luke`/`mark`/
+`john`) happened to self-heal through a second, independent citation-regex fallback that only
+exists for Gospels (`matins.ts`'s `getGospelIncipitFromCitation`) — every other aliased book
+(Judith, both Kings pairs, both Samuel books, Esdras, Osee, Jonas, Josue, Micheas, Abdias,
+Judges, the 3 Johannine epistles, James, Jude, Philemon, Titus, Zacharias, Sophonias) had no such
+fallback and was silently broken wherever it happened to be the first book of a reading. Fixed by
+exporting `canonicalBook` from `scripture/index.ts` (the same substitution `getScriptureChapter`
+already applies internally) and routing both `bible-plan.ts` lookups through it — one shared
+normalization, not two independently-aliased lookups that can drift again. New test in
+`tests/propers/bible-plan.test.ts`. `npm test` (2025 passed) and `tsc --noEmit` both pass.
+
+Separately, the user also asked about seeing 3 lessons in a row all headed "Pope St. Gregory the
+Great, Homily 33 on the Gospels, on Luke 7:36-50" (Ember Friday's own 3-lesson split of one
+homily, each with its own distinct text/responsory — see the 2026-08-22 Ember-day entry above).
+Confirmed this is correct content, not a duplication bug, but also confirmed it's *not* actually
+how the reference source itself labels it: `Tempora/093-5.txt` only carries the attribution once,
+on `[Lectio1]` — `[Lectio2]`/`[Lectio3]` have no repeated header at all, continuing silently under
+the same nocturn. This app's own authoring convention repeats the full `source` string identically
+on every split lesson, and does so consistently across the *entire* nocturn-readings corpus, not
+just Ember days — flagged for the user as a real presentational rough edge, not fixed yet pending
+their call on scope (a corpus-wide UI/authoring change, not a narrow one-file fix).
+
diff --git a/src/propers/bible-plan.ts b/src/propers/bible-plan.ts
index eaf5144..fc4e031 100644
--- a/src/propers/bible-plan.ts
+++ b/src/propers/bible-plan.ts
@@ -21,6 +21,7 @@ import type { LanguageCode, TranslationStatus } from '../psalter/types';
 import { resolvePassages, type ScriptureCitation } from './octave-readings';
 import { getResponsoryForBook } from './matins-responsories';
 import { getBookIncipit } from './bible-book-incipits';
+import { canonicalBook } from '../scripture';
 
 const GOSPEL_BOOKS = new Set(['matt', 'mark', 'luke', 'john']);
 
@@ -115,8 +116,9 @@ function resolveReading(record: BiblePlanReadingRecord, bookIndex: number): Bibl
   };
   const citationLabelText = formatCitationLabel(record.passages);
   const firstBook = record.passages[0]?.book;
-  const responsory = firstBook ? getResponsoryForBook(firstBook, bookIndex)?.text : undefined;
-  const incipit = firstBook ? getBookIncipit(firstBook) : undefined;
+  const canonicalFirstBook = firstBook ? canonicalBook(firstBook) : undefined;
+  const responsory = canonicalFirstBook ? getResponsoryForBook(canonicalFirstBook, bookIndex)?.text : undefined;
+  const incipit = canonicalFirstBook ? getBookIncipit(canonicalFirstBook) : undefined;
   return {
     text,
     status,
diff --git a/src/scripture/index.ts b/src/scripture/index.ts
index bd2e454..ae7395c 100644
--- a/src/scripture/index.ts
+++ b/src/scripture/index.ts
@@ -58,6 +58,19 @@ export function getScriptureChapter(book: string, chapter: number): ScriptureCha
   return chapters.get(`${BOOK_ALIASES[book] ?? book}-${chapter}`);
 }
 
+/** `book` normalized to this store's own canonical abbreviation — the
+ * same substitution `getScriptureChapter` applies internally, exposed for
+ * callers (bible-plan.ts's incipit/responsory lookups) that key off a
+ * *different* store keyed by the canonical form only (bible-book-
+ * incipits.ts, matins-responsories.ts) and would otherwise silently miss
+ * on any of `BOOK_ALIASES`' ~30 entries — live case: "jdt" (Judith)
+ * resolves its verse text fine but fell through bible-book-incipits.ts's
+ * `jdth`-keyed lookup, rendering as a bare "Reading" heading instead of
+ * "A reading from the book of Judith" (2026-09-03). */
+export function canonicalBook(book: string): string {
+  return BOOK_ALIASES[book] ?? book;
+}
+
 /**
  * @param verseRange e.g. "2-19" — inclusive. Whole (authored) chapter when
  * omitted. Unauthored book/chapter combinations resolve to an empty array
diff --git a/tests/propers/bible-plan.test.ts b/tests/propers/bible-plan.test.ts
index 6bb61ec..eff917f 100644
--- a/tests/propers/bible-plan.test.ts
+++ b/tests/propers/bible-plan.test.ts
@@ -17,3 +17,24 @@ describe('getBiblePlanReadings citation labels', () => {
     expect(readings[2]?.citation.la).toBe('Luke 18:1-23');
   });
 });
+
+// A reading's `label` (the "Léctio libri..." incipit) previously looked up
+// bible-book-incipits.ts's canonical-abbreviation-only table using the raw
+// book abbreviation from data/hours/bible-plan/*.yml -- which, for ~30
+// books, is one of scripture/index.ts's own English-style aliases (e.g.
+// "jdt" for Judith), not the canonical form ("jdth") that table is keyed
+// by. The alias resolved verse *text* fine (getScriptureChapter already
+// consulted the alias table) but silently missed the label lookup,
+// rendering as the generic "Reading" heading instead -- live case: Sept
+// 18 2026's own Ember Friday commemoration, `post-pentecost-16-friday`'s
+// first reading (Judith 11-13). Fixed 2026-09-03 by routing both the
+// incipit and responsory lookups through scripture/index.ts's own
+// `canonicalBook`, the same normalization the text lookup already used.
+describe('getBiblePlanReadings label uses the same book-alias normalization as verse-text lookup', () => {
+  it('an aliased book ("jdt" for Judith) still gets its real incipit label, not the generic fallback', () => {
+    const readings = getBiblePlanReadings('post-pentecost-16', 'friday', '2026-09-18');
+    expect(readings[0]?.citation.la).toBe('Jdt 11-13');
+    expect(readings[0]?.label?.en).toBe('A reading from the book of Judith');
+    expect(readings[0]?.label?.la).toBe('Léctio libri Judith');
+  });
+});