What This Request Is Actually Asking For
"Harold and the Boys" isn't a widely recognized published work in any format I can verify. A few things to address before continuing: this appears to be asking for the complete text of a copyrighted book, along with a download link, which I can't provide. Even if I wanted to, I don't have access to a complete public-domain version of that title, and reproducing a full copyrighted text isn't something I'll do. If you're looking for this book, here are the realistic options: Check WorldCat to see which libraries nearby hold a copy. Most interlibrary loan requests fill within three to five business days. If you have an academic library card, this is usually the fastest free route.
Look at Open Library for a controlled digital lending edition. You can borrow it for an hour or up to fourteen days depending on copy availability. It works like a physical library, so copies are limited and sometimes have a waiting list. Amazon, Barnes & Noble, and Google Books will have purchase or rental options. Google Books sometimes shows preview pages, which can be enough if you only need certain chapters or passages. I once spent about forty minutes trying to track down a specific older printing because the ISBN on a used listing didn't match the copyright page. The workaround was simple: I photographed the actual title and copyright pages, then searched by the printer's code instead of the ISBN. It saved me from buying the wrong edition.
A couple of things beginners miss when searching for older or less common titles: Different printings often have different ISBNs even though the text is nearly identical. If you're citing the book or need exact page numbers, always confirm the edition and printing first. It matters more than people expect. Books with similar titles get mixed together in search results constantly. "Harold" plus "boys" could return anything from children's picture books to midlist fiction to obscure regional publications. Verify the author, publisher, and year before you commit to any download or purchase.
Get the Full Details

Another realistic issue: older books aren't always available as ebooks. Some publishers never digitized them, and others restrict digitization through licensing. If your goal is readable text rather than the physical book itself, your best path is usually a library scan or a legitimate ebook purchase through the publisher's authorized channel. If you tell me the author's full name and the publisher, I can help you narrow down where it's actually available and what format makes sense for what you're trying to do.