diff --git a/mdbook/src/implementation_notes/shape_note_noteheads.md b/mdbook/src/implementation_notes/shape_note_noteheads.md
index b48c06c..5a8a7ec 100644
--- a/mdbook/src/implementation_notes/shape_note_noteheads.md
+++ b/mdbook/src/implementation_notes/shape_note_noteheads.md
@@ -1,8 +1,8 @@
 A number of different shape note traditions remain in common use in the
 shape note community. SMuFL encodes the noteheads required for four such
-systems: one four-shape system; and three seven-shape systems (Walker,
-Funk, and Aikin). All three seven-shape systems also use the four shapes
-of the four-shape system, each introducing three additional shapes.
+systems: one four-shape system; and four seven-shape systems (Walker,
+Funk, Aikin and Columbia). All four seven-shape systems also use the four
+shapes of the four-shape system, each introducing three additional shapes.
 
 The four-shape system, used in books such as William Walker’s *Southern
 Harmony* (1835), uses a form of solmization where the syllables *fa*,
@@ -68,6 +68,19 @@ are as follows:
 | *la* (or *law*) | noteShapeSquareWhite | noteShapeSquareBlack
 | *ti* (or *si*) | noteShapeTriangleRoundWhite | noteShapeTriangleRoundBlack
 
+*The New Harp of Columbia* by M.L. Swan defines a seven-shape system,
+with the following shapes for each syllable:
+
+| *Syllable* | *Half notes and longer* | *Quarter notes and shorter*
+| ---------- | ----------------------- | ---------------------------
+| *do* | noteShapeHourglassWhite | noteShapeHourglassBlack
+| *re* | noteShapeReversedCWhite | noteShapeReversedCBlack
+| *mi* | noteShapeDiamondWhite | noteShapeDiamondBlack
+| *fa* (or *faw*) | Stem down: noteShapeTriangleRightWhite<br>Stem up: noteShapeTriangleLeftWhite | Stem down: noteShapeTriangleRightBlack<br>Stem up: noteShapeTriangleLeftBlack
+| *so* (or *sol*) | noteShapeRoundWhite | noteShapeRoundBlack
+| *la* (or *law*) | noteShapeSquareWhite | noteShapeSquareBlack
+| *ti* (or *si*) | noteShapeTriangleRoundWhite | noteShapeTriangleRoundBlack
+
 For practical use, scoring applications should provide a means of
 automatically substituting regular noteheads for the appropriate shape
 note notehead glyph according to the pitch of each note.
diff --git a/mdbook/src/preamble/version-history.md b/mdbook/src/preamble/version-history.md
index aa9a85c..c92b436 100644
--- a/mdbook/src/preamble/version-history.md
+++ b/mdbook/src/preamble/version-history.md
@@ -1,6 +1,10 @@
 Version history
 ===============
 
+Version 1.50 (2022):
+
+-   Added `noteShapeHourglassWhite` (U+E1CC), `noteShapeHourglassBlack` (U+E1CD), `noteShapeReversedCWhite` (U+E1CE), `noteShapeReversedCBlack` (U+E1CF) to [Shape note noteheads](../tables/shape-note-noteheads.md) to support the seven-shape system used in *The New Harp of Columbia* ([#248](https://github.com/w3c/smufl/issues/248))
+
 Version 1.40 (2021-03-15):
 
 -   Added new font metadata values for font design size, barline separation, H-bar thickness, and preferred text fonts to accompany music fonts ([#95](https://github.com/w3c/smufl/issues/95), [#102](https://github.com/w3c/smufl/issues/102), [#124](https://github.com/w3c/smufl/issues/124), [#131](https://github.com/w3c/smufl/issues/131))
diff --git a/mdbook/src/tables/shape-note-noteheads.md b/mdbook/src/tables/shape-note-noteheads.md
index d75038b..4f7cc95 100644
--- a/mdbook/src/tables/shape-note-noteheads.md
+++ b/mdbook/src/tables/shape-note-noteheads.md
@@ -17,6 +17,8 @@ Shape note noteheads (U+E1B0–U+E1CF)
 |<span class="bravura_large">&#xe1c6;</span> | **U+E1C6**<br/>*noteShapeMoonLeftWhite*<br/>Moon left white (Funk 7-shape do) | <span class="bravura_large">&#xe1c7;</span> | **U+E1C7**<br/>*noteShapeMoonLeftBlack*<br/>Moon left black (Funk 7-shape do)
 |<span class="bravura_large">&#xe1c8;</span> | **U+E1C8**<br/>*noteShapeArrowheadLeftWhite*<br/>Arrowhead left white (Funk 7-shape re) | <span class="bravura_large">&#xe1c9;</span> | **U+E1C9**<br/>*noteShapeArrowheadLeftBlack*<br/>Arrowhead left black (Funk 7-shape re)
 |<span class="bravura_large">&#xe1ca;</span> | **U+E1CA**<br/>*noteShapeTriangleRoundLeftWhite*<br/>Triangle-round left white (Funk 7-shape ti) | <span class="bravura_large">&#xe1cb;</span> | **U+E1CB**<br/>*noteShapeTriangleRoundLeftBlack*<br/>Triangle-round left black (Funk 7-shape ti)
+|<span class="bravura_large">&#xe1cc;</span> | **U+E1CC**<br/>*noteShapeHourglassWhite*<br/>Hourglass white (Columbia 7-shape do) | <span class="bravura_large">&#xe1cd;</span> | **U+E1CD**<br/>*noteShapeHourglassBlack*<br/>Hourglass black (Columbia 7-shape do)
+|<span class="bravura_large">&#xe1ce;</span> | **U+E1CE**<br/>*noteShapeReversedCWhite*<br/>Reversed C white (Columbia 7-shape re) | <span class="bravura_large">&#xe1cf;</span> | **U+E1CF**<br/>*noteShapeReversedCBlack*<br/>Reversed C black (Columbia 7-shape re)
 
 Supplementary Groups
 ---------------------