https://hn.algolia.com/?query=designers%20guide%20to%20dpi&sort=byPopularity&prefix&page=0&dateRange=all&type=story https://hn.algolia.com/?query=designers%20gu

https://hn.algolia.com/?query=designers%20guide%20to%20dpi&sort=byPopularity&prefix&page=0&dateRange=all&type=story https://hn.algolia.com/?query=designers%20guide%20to%20dpi&s... Seems the oldest submission is at least 3 years old.