We are independent & ad-supported. We may earn a commission for purchases made through our links.
Historical Index

Advertiser Disclosure

Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.

How We Make Money

We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently from our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

Contact Us

We love to hear from our users! If you have suggestions, comments or ideas, please let us know. There are several ways to communicate with us, and you should feel free to use whichever method you are most comfortable with.

Perhaps the easiest way to contact Historical Index is to use the simple form below. If you would like a reply, please remember to include your email address. We usually reply within two business days.

Send a message





Get in touch

133 Kearny #400,
San Francisco, CA 94108
415-669-8983

HistoricalIndex, in your inbox

Our latest articles, guides, and more, delivered daily.

HistoricalIndex, in your inbox

Our latest articles, guides, and more, delivered daily.