diff --git a/docs/Data-Management.md b/docs/Data-Management.md
index 8aac1ac0..cb3a3c28 100644
--- a/docs/Data-Management.md
+++ b/docs/Data-Management.md
@@ -319,6 +319,8 @@ _Taxa Representation in Nightingales_
 
 All images should be stored in the proper species directory at http://owl.fish.washington.edu/hesperornis/
 
+To browse what has already been catalogued, use the [Histology Databank Explorer](histology-explorer/index.html) — it joins the databank sheet to the images on owl so you can search samples by species, project, year, tissue, and researcher, and view the slides. Its "Unmatched images" view lists specimens imaged on owl that have no databank row yet. The Explorer is a snapshot rebuilt from a CSV export of the sheet, so new entries appear only after the next [rebuild](https://github.com/RobertsLab/resources/blob/master/docs/histology-explorer/README.md).
+
 
 
 ---
diff --git a/docs/histology-explorer/README.md b/docs/histology-explorer/README.md
index 399fa190..9d0ed033 100644
--- a/docs/histology-explorer/README.md
+++ b/docs/histology-explorer/README.md
@@ -43,8 +43,10 @@ histology-explorer/
 
 Many images (all of `O_angasi`, the 2026 geoduck gonad set) are archival **`.tif`** files,
 which browsers cannot display. The explorer shows browser-viewable `.jpg`/`.png` inline and
-offers `.tif` as a download link. A sample with only `.tif` images shows a "TIF only" card.
-To give those real thumbnails, generate `.jpg` derivatives (see next section).
+offers the `.tif` as a download link. For `.tif` files with a generated `.jpg` derivative, the
+derivative is displayed and the original stays downloadable — 44 of the 100 imaged samples
+currently display this way. A `.tif` with no derivative shows a "TIF only" card; to give those
+real thumbnails, generate derivatives (see next section).
 
 ## Generating JPEG derivatives for `.tif` images
 
@@ -76,9 +78,10 @@ updates `build/derivatives_manifest.csv`. Then:
 ## Current coverage (from the last build)
 
 - 1,308 sheet rows → **940 unique samples**
-- **100 samples** have at least one image; **56** have a browser-viewable image
-- **918 image files** indexed; ~651 are "orphans" — imaged on owl but **not yet entered in the sheet**
-  (e.g. `O_angasi` 45–146, `O_lurida` 241–386, the Larken clam set). See `data/qc_report.md`.
+- **100 samples** have at least one image, all of them browser-viewable
+- **918 image files** indexed; **267** matched to a sample and **651** are "orphans" — imaged on owl
+  but **not yet entered in the sheet** (e.g. `O_angasi` 45–146, `O_lurida` 241–386, the Larken clam
+  set). See `data/qc_report.md`.
 
 ## Viewing locally