Where was the original lassie come home movie shot?

Answer 1

From IMDb, here is the list of shooting locaitons for this 1943 movie:

• Big Bear Lake, Big Bear Valley, San Bernardino National Forest, California, USA
• Big Bear Valley, San Bernardino National Forest, California, USA
• Big Sur, California, USA
• Calabasas, California, USA
• California, USA
• Chatsworth, Los Angeles, California, USA
• Irvine Park, Santa Ana, California, USA
• Janss Conejo Ranch, Thousand Oaks, California, USA
• Laguna Beach, California, USA
• Lake Arrowhead, San Bernardino National Forest, California, USA
• Lake Chelan, Washington, USA
• Los Angeles, California, USA
• Malibu, California, USA
• Point Lobos, Point Lobos State Reserve, California, USA
• San Bernardino National Forest, California, USA
• San Fernando Valley, Los Angeles, California, USA
• San Joaquin River at Stockton, California, USA (backgrounds)
• Santa Ana, California, USA
• Santa Barbara, California, USA (backgrounds)
• Seattle, Washington, USA (backgrounds)
• Stockton, California, USA
• Thousand Oaks, California, USA
• Washington, USA