Boys Cinema ran every week from Dec 1919 (n1) to May 1940 (n1063). Houdini appeared in 1920, 1921, 1922, and 1923 issues:

1. Jan 17, 1920. v1 n6. “Houdini the Handcuff King”  cover & p26.  (HHCE Collection)
2. Feb 21, 1920. v1 n11. “Houdini”  p12+.  (HHCE Collection)
3. Jan 8, 1921. v3 n57. photo  p5. (HHCE Collection)
4. Feb 5, 1921. v3 n61. photo p26. (HHCE Collection)
5. Feb 19, 1921. v3 n63. photo  p5. (HHCE Collection)
6. May 7, 1921. v3 n74. “The Grim Game”  p14. (HHCE Collection)
7. May 14, 1921. v3 n75. “Terror Island”  cover & p2+.  (HHCE Collection)
8. June 25, 1921. v4 n81. “The Grim Game”  p14+. (HHCE Collection)
9. July 30, 1921. v4 n86.  “The Marvelous Houdini” (photo feature)  p14+.  (HHCE Collection)
10. March 4, 1922. v5 n117. Houdini card on cover.  (HHCE Collection)
11. March 25, 1922. v5 n120. Houdini cover with Famous Heroes Card # 4 insert. (Missing)
12. Jan 13, 1923. v6 n162. “Houdini In The Man From Beyond”  p14+.  (Arthur Moses Collection)

This week I share Houdini’s appearance in Boys Cinema July 30, 1921. v4 n86 from my personal collection.