These were taken today. The other girls are older but are still the same breed as her. They are laying white eggs. She was just the only girl I could get my hands on! I have 6 others of the same breed. I was told they were black astrolorps and didn't think otherwise until white eggs started appearing.
Have you laid the eggs on a sheet of white paper to check the color? Some breeds lay pretty light brown eggs that can look white until you get them next to something really white. Can you get a picture of the adults, what is their skin and leg color? Most breeds that come in black that lay white eggs that have single combs have pretty big white earlobes, Minorca, Leghorn, Andalusian and Spanish are the four that come to mind.