diff --git a/doc/Transcription-Convention.Rmd b/doc/Transcription-Convention.Rmd
index dc77fb1..90c6758 100644
--- a/doc/Transcription-Convention.Rmd
+++ b/doc/Transcription-Convention.Rmd
@@ -172,7 +172,7 @@ Within that framework, though, there are some important things to consider
 - Don't use capital letters for the start of new sentences. Only use capital letters for proper nouns and the pronoun _I_
 - Write all numbers out in full, with spaces instead of hyphens (e.g., `one hundred and twenty three` not <code class="counterex">123</code> or <code class="counterex">one hundred and twenty-three</code>)
 - When abbreviations or acronyms are used
-	- If each letter is said separately, use capital letters with spaces in between each letter (e.g., `P G H`)
+	- If each letter is said separately, use capital letters with spaces in between each letter (e.g., `P G H`). If the word is pluralized, just attach the `s` to the last letter (e.g., `D V Ds`).
 	- If the word is pronounced as a word, use capitals with no spaces (e.g., `FEMA`)
 - Don't use any diacritics that are not part of the English alphabet (e.g., `fiancee` not <code class="counterex">fiancée</code>)
 - A single word should always be spelled as an entire word, even if there is a pause between syllables. **Never** put a breakpoint in the middle of a word.
diff --git a/doc/Transcription-Convention.html b/doc/Transcription-Convention.html
index fcae1c2..f9cfb0f 100644
--- a/doc/Transcription-Convention.html
+++ b/doc/Transcription-Convention.html
@@ -1508,7 +1508,7 @@ <h1 class="title toc-ignore">Transcription convention</h1>
 <h3 class="subtitle">Archive of Pittsburgh Language and Speech
 (APLS)</h3>
 <h4 class="author">Dan Villarreal</h4>
-<h4 class="date">Last updated August 11, 2023</h4>
+<h4 class="date">Last updated August 18, 2023</h4>
 
 </div>
 
@@ -1811,7 +1811,9 @@ <h2 class="hasAnchor"><span class="header-section-number">3.1</span>
 <li>When abbreviations or acronyms are used
 <ul>
 <li>If each letter is said separately, use capital letters with spaces
-in between each letter (e.g., <code>P G H</code>)</li>
+in between each letter (e.g., <code>P G H</code>). If the word is
+pluralized, just attach the <code>s</code> to the last letter (e.g.,
+<code>D V Ds</code>).</li>
 <li>If the word is pronounced as a word, use capitals with no spaces
 (e.g., <code>FEMA</code>)</li>
 </ul></li>
diff --git a/files/custom-dictionary/APLS-dict.csv b/files/custom-dictionary/APLS-dict.csv
index 0acca94..24c88d9 100644
--- a/files/custom-dictionary/APLS-dict.csv
+++ b/files/custom-dictionary/APLS-dict.csv
@@ -66,9 +66,9 @@ Haine,'h1n
 Schenley,'SEn-li
 Braddock,'br{-d@k
 Braddock,'br{-dQk
-Edinboro,'Ed-In-b@r-5
+Edinboro,'E-dIn-b@r-5
 Murrysville,'m3r-iz-"vIl 
-Morningside,'m$rn-IN-"s2d
+Morningside,'m$r-nIN-"s2d
 Swissvale,'swIs-"v1l
 Deener,'di-n@r
 Aspinwall,'{s-pH-"w$l
@@ -327,3 +327,29 @@ o~,5
 u~,@
 ou~,6
 oi~,4
+
+
+// Plural letters (for e.g. "D V Ds")
+Bs,'biz
+Cs,'siz
+Ds,'diz
+Es,'iz
+Fs,'Efz
+Gs,'_iz
+Hs,'1-J@z
+Js,'_1z
+Ks,'k1z
+Ls,'Elz
+Ns,'Enz
+Os,'5z
+Ps,'piz
+Qs,'kjuz
+Rs,'#rz
+Ss,'E-s@z
+Ts,'tiz
+Vs,'viz
+Ws,'dV-bP-juz
+Xs,'Ek-s@z
+Ys,'w2z
+Zs,'ziz
+// N.B. [AIMU]s are already specified in Unisyn
diff --git a/files/custom-dictionary/README.md b/files/custom-dictionary/README.md
index 524438b..015cdf6 100644
--- a/files/custom-dictionary/README.md
+++ b/files/custom-dictionary/README.md
@@ -188,4 +188,6 @@ For each layer:
    - Follow the steps for [dialect pronunciations](#dialect-pronunciations)
 
 
+### If you need to correct a custom entry
 
+<!-- ADD -->
diff --git a/files/custom-dictionary/aplsDict.txt b/files/custom-dictionary/aplsDict.txt
index 3632137..1b7146f 100644
--- a/files/custom-dictionary/aplsDict.txt
+++ b/files/custom-dictionary/aplsDict.txt
@@ -307,3 +307,28 @@ z~
 zh~
 
 
+##Plural letters (for e.g. "D V Ds")
+Bs
+Cs
+Ds
+Es
+Fs
+Gs
+Hs
+Js
+Ks
+Ls
+Ns
+Os
+Ps
+Qs
+Rs
+Ss
+Ts
+Vs
+Ws
+Xs
+Ys
+Zs
+
+