This is the last episode that directly links Wonder Woman to her time in the United States during World War II.
At about 8 minutes in, when Wonder Woman opens the vault, you hear Steve say "OK Linda".
Lynda Carter is virtually the only female in this entire episode. There is a quick video shot that shows a woman congratulating Dr. Wilson, but no dialogue.
When Wonder Woman (Lynda Carter) enters Takeo Ishida's (Yuki Shimoda) house, the memorabilia (posters and news clippings) show the difference between Wonder Woman's old costume and the updated one she wears, which has less white stars on her pants, and instead of the golden eagle pattern on the bustier, it has been replaced with golden streaks across her chest, in the form of eagle wings.