Baseball Cards Price

Why is there no info on baseball trading cards listed in the price guide between 1915 and 1935? I have noticed in the Becketts Baseball Price Guide, that there is no information listed for baseball trading cards from 1915-1933? Did they still make baseball cards during this time? If not, what was the reason they stopped making them?

How do I price thousands of trading cards quickly? I have a huge box of thousands of baseball and football cards. There are too many cards to flip through a price guide to find each individual card's price. Is there a quicker way to find the value of the cards?

Are there any 100% free price guides for baseball, basketball, football, and racing cards? I have a small collection of trading cards, and I was wondering if there are any 100% free online price guides. I've tried beckett.com, but they ask for a credit card, which I don't have.

Anyone know a good website? Know of a good website to price trading cards? And don't have to pay to see a price guide? I have football, baseball, and NASCAR trading cards. ***besides Ebay***

A mountain of 60's baseball cards - evaluation? Pricing? Hi. I'm hoping someone will make my day saying that I have the possibility of having a gold mine on my hands. My dad collected sports cards religiously in the 60s. I have one of many shoeboxes of cards he owned. I estimate there to be about 400 in this box. Here's the thing - I know nothing about them, really. The best I've got as far as trading card knowledge is an extensive history with Pokémon cards. Yeah, pretty sad. I was wondering how I could value all of them? They're honestly from tons and tons of different sets - probably 65% topps. I'm afraid that a standard value book will not cover them all. I'm just very interested in the values. They're pretty much untouched since about 1974, so they're all in about the condition he first got them. Except for a few that he'd obviously traded for. But still, they don't look 35-40 years old by a long shot. Any ideas to get me started? I'm a broke high school student so I can't really afford professional evaluation. Free sites? Guides?