Julie Adams
No. Widescreen was only one year old at that point ("The Robe" was first to have it).It was however, released in 3-D (dual-strip).
The Amazon
No it was not filmed in silver springs ,Florida like other people think.Where it was really filmed was Wakulla springs ,Florida in Wakulla county.They also made the old Tarzan 1 and 2 there.Hey but...
Creature from the Black Lagoon was made in 1954 ; see related link .