Franck Sauvage adventures have appeared in weekly episodes in the magazines Journal de Mickey, Robinson, Donald and Story (Belgium) during the 30s as "Nouvelles aventures de Franck Sauvage". Each episode had some original black and white art, very similar to the US pulps interior art, although more stylized. Doc's aides are called Le Gorille (Monk) and Ted (Ham).

I shall never be grateful enough to Michel Vincke for the research work performed and the many xeroxes kindly sent from Belgium to Switzerland ! Thanks also to Sean Bourke (Ireland) for the additional bibliographical information provided !

Here are the detailed publication dates. Some starting and ending publication  dates are best guesses, taking account of the stories progression for the episodes remaining and might be off by one or two. The #own column indicates the number of episodes I have copies of.
 
In Mickey

 

Mickey Title	Pulp Title	Marabout title	Dates	Mickey #	Credits	#own
Franck Sauvage	Man of bronze	L'homme de bronze	1935	#23-#41	d'A ?	1
Le naufrage de l'Océanic	Polar treasure	Le trésor polaire	1936	#50-#77	F	1
Le météore bleu	Meteor menace	La grande terreur	Jan-May 1937	#116-#133	F	6
La neige rouge	Red snow	La neige rouge	May-Oct 1937	#135-#156	F, S	8
La légion fantôme	Spook legion	La légion fantôme	Apr-Aug 1938	#181-#200	F	10+3 part
Le bolide mystérieux	Secret in the sky	Alerte dans le ciel	Sep-Dec 1938	#203-#220	F	15
Le démon hurlant	Roar devil	-	Jan-Jul 1939	#221-#246	d'A, F	21
Le voilier des Vikings	Quest of Qui	A la poursuite de Quar	Jul-Nov 1939	#247-#266	d'A, F	14
La grotte aux fantômes	Spook hole	-	Nov 1939-Apr 1940	#269-#286	d'A, F	11
Le monstre des Sargasses	Sargasso ogre	L'ogre des Sargasses	1940 ?	#287-#296	?	0