Halve artichoke hearts; marinate in Italian salad dressing for 1 hour in the refrigerator.
Drain hearts, reserving dressing.
Dice 2 of the hard-cooked eggs; sprinkle with salt.
In large salad bowl place spinach, lettuce, drained artichoke hearts, and diced eggs; toss lightly with reserved salad dressing.
Slice remaining egg; arrange over salad.