Regarding the pictures contained in the 2019 and 2020 Auction Archives, and in the Highly Collectible Light Bulbs section, those are pictures sourced from online auctions. Their copyrights belong to the people who originally took each picture. Due to the nature of online auctions, many, if not all of these photos have already served their original purpose, so I've "borrowed" them under the assumption that the original authors would not mind, if they saw that their pictures are being used for educational purposes (there are no paid ads on this website and I make no money out of it). Regardless, if this bothers anyone who originally took one or more of these pictures, just send me a message here and I will take them down.
Regarding the books on this page: The copyright of the book "The History Of The Incandescent Lamp" has expired and is in the public domain, so you may freely copy and use the raw text and the raw images, as long as care is taken to copy just the bare text and not the html that it is embedded into (meaning, please don't copy the webpage code, just the text/images). Though, you may still copy the webpage as-is for saving to your computer or other device. As for the copyright of the PDF book "Early Incandescent Lamps 1880-1925 By Edward J. Covington", the document was searched for a copyright symbol (©) or copyright notice but one was not found, so the copyright status is unclear.
Regarding the pictures in the "YOUR Light Bulbs" section, those are photos taken by website visitors of their own light bulbs, and permission has been given to me to host these photos here. The copyright of each of those photos remains with each of the original authors.
The rest of the photos on this website (excluding a few pictures here and there) were taken/produced by me, intending to use them to educate the wider public about early light bulbs and light bulb collecting. They may be used freely for educational purposes, as long as credit is given back to this website. I also allow using text for auction descriptions, as long as you mention my website by name. If you prefer, you can also link directly to the page that contains the info you need. Images may be linked to directly from online forums and social media for purposes of discussion. However, the actual JPEG files must not be copied over to a different server or website, nor embedded into monetized youtube videos or channels. And of course they may not be used for any illegal or commercial purposes.