I used 8 pounds of Idaho potatoes (peeled, chopped, and boiled in salted water) and 3 small red skinned potatoes (diced and not peeled), 18 hard boiled eggs (diced), 1 small onion finely chopped, 2 stalks of finely diced celery, 3 TBSP sweet pickle relish, 2 TBSP dill pickle relish, about 20 ounces of mayonnaise, 10 ounces of yellow mustard, 1 tsp celery seeds, 1/4 tsp ground black pepper. The potatoes are still boiling and the rest is in the mixing container. I am about to go check on the potatoes, I like mine tender so that they are nearly falling apart and end up being like chunky mashed potatoes after being stirred in. I will have to cool them considerably before adding to the mixture. And then I have to taste and decide how much salt it might need (or additional mayonnaise and other ingredients). I'll update with a photo later.
Edited that I added 2 more diced celery stalks, a dollop of mayonnaise, and am in the process of boiling 8 more eggs. What can I say? It needed more crunch and the mayo/mustard balance was off, and I LOVE eggs!