I decided to look into the Historic Map Works site. I registered for a Free Account, and the welcome page showed:
The site notes that:
"Your account has been successfully created with the username rjseaver. An email containing your login information has been sent to the email address you provided. We have automatically logged you in. You can manage your account by clicking the "My Account" link in the menu. We have added $0.90 of Bonus Credit to your account to get you started (that's 45 map views)! To get started, add credit to your account or buy an inclusive subscription.
"Why Should I Add Credit?
When you add credit to your BASIC PAY-PER-USE account, it can be used to access our premium features such as Enhanced Zoom, Address Search, Directory Viewing, Downloads-at-Home, and Print-at-Home functions. When you use one of these features, the appropriate amount of credit is automatically deducted from your account. Credit can also be used toward the purchase of any print, framed print, or gift item on the site."
The site offers a pay-per-view option (you add money with a credit card) , a monthly subscription ($29.99) or a yearly subscription ($249.99):
What are the relative benefits between a pay-per-use account and a subscription: The table below shows the benefits:
I input Killingly, Connecticut to see what was offered , and received this list of maps available:
I clicked on one of these maps, and was able to see the requested map in an (approximate) 8 inches high and 11 inches wide window. The image has a watermark on it. The user can zoom in on the image and move it around - to the extent that you can see the family names on the maps. I did not show you a screen shot of the Killingly CT map because it might violate the copyright notice. The copyright notice is here. The Terms and Conditions note that:
* For better quality prints and higher detail you can crop this image here.
* High quality prints can be obtained by ordering from our purchase page.
* If you require an image without watermark or you wish to use an image for a use which is not covered in the terms and conditions above, please consult our FAQ section here.