diff --git a/challenge-027/roger-bell-west/blog.txt b/challenge-027/roger-bell-west/blog.txt
new file mode 100644
index 0000000000..2fcec8f406
--- /dev/null
+++ b/challenge-027/roger-bell-west/blog.txt
@@ -0,0 +1 @@
+https://blog.firedrake.org/archive/2019/09/Perl_Weekly_Challenge_27.html
diff --git a/challenge-028/roger-bell-west/blog.txt b/challenge-028/roger-bell-west/blog.txt
new file mode 100644
index 0000000000..e600ca2a7b
--- /dev/null
+++ b/challenge-028/roger-bell-west/blog.txt
@@ -0,0 +1 @@
+https://blog.firedrake.org/archive/2019/10/Perl_Weekly_Challenge_28.html