Add disclaimers.HEADmaster

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diff --git a/ordinal-zoo.tex b/ordinal-zoo.tex
index 86cde74..e651d0e 100644
--- a/ordinal-zoo.tex
+++ b/ordinal-zoo.tex
@@ -55,6 +55,10 @@ Git: \input{vcline.tex}
 \textbf{\textcolor{red}{Preliminary version:}} the labels in this
 document are subject to change.
 
+None of these results are mine.  The purpose of this document is
+simply to collect various pointers to the literature, grouping them by
+ordinals they are concerned with, and order these ordinals by size.
+
 \section{Recursive ordinals}
 
 \setcounter{comcnt}{-1}
@@ -488,6 +492,9 @@ compact, etc.
 
 \section{Various statements}
 
+Again, none of these statements is due to me, they are well-known
+facts for which I couldn't find a suitable published proof.
+
 \begin{prop}\label{PlusPlusStableOrdinalIsSigmaOneOneReflecting}
 If $\alpha$ is such that $L_\alpha \mathrel{\preceq_1}
 L_{\alpha^{++}}$ (where $\alpha^+,\alpha^{++}$ are the two smallest