diff --git a/poc.sh b/poc.sh
index fdd3758..fd8d0be 100644
--- a/poc.sh
+++ b/poc.sh
@@ -6,9 +6,11 @@ main() {
    set -o pipefail
    #set -x
 
-   local output="$(mktemp -d)"
+   local output="${1:-$(mktemp -d)}"
    log "$output"
 
+   #scrape_book_chapter https://www.dndbeyond.com/compendium/rules/phb/credits | less
+
    #list_chapters_in_book https://www.dndbeyond.com/sources/sdw
 
    #scrape_book_chapter https://www.dndbeyond.com/sources/phb/races | less
@@ -20,7 +22,6 @@ main() {
       book="${book%/}"
       log book=$book
       scrape_book "$output/${book##*/}" "$book"
-      break
    done
 
 
@@ -46,7 +47,13 @@ scrape_book() {
    local output="$1"
    local book_url="$2"
 
+   if [ -d "$output" ] && ls "$output"/* && [ ! -f "$output/.wip" ]; then
+      log "$book_url already in $output"
+      return
+   fi
+
    mkdir -p "$output"
+   touch "$output/.wip"
    local f="$(mktemp)"
 
    for chapter in $(list_chapters_in_book "$book_url"); do
@@ -61,7 +68,10 @@ scrape_book() {
       mv "$f" "$output"/"$title"
    done
 
-   rm "$f"
+   if [ -f "$f" ]; then
+      rm "$f"
+   fi
+   rm "$output/.wip"
 }
 
 scrape_book_chapter() {
@@ -122,6 +132,7 @@ html_to_markdown() {
       (echo "$out" | grep -q '^##* Appendix' && echo Appendix) \
       || (echo "$out" | grep -q '^##* Chapter' && echo Chapter) \
       || (echo "$out" | grep -q '^##* Introduction' && echo Introduction) \
+      || (echo "$out" | grep -q '^##* Credits' && echo Credits) \
       || echo Chapter
    )"
    echo "$out" \