Helios : A Compilation of Boiler Room Engineering Information

Purchases will ship by US Media Mail or Priority Mail (if buyer selects) and higher priced items may have insured placed on the order and will typically ship within one business day. Additional postage may be required for multiple volume books or books weighing over 5 lbs., but only in unusual cases. Insurance is available upon request though we normally place insurance on any item of $75 or higher at no additional cost to the buyer. Non-US sales will ship by First Class International or Global Priority. Additional postage may be required for multiple volume books or books weighing over 4 lbs.

We always take extra care in packaging and shipping. Books are typically wrapped in packing paper or bubblewrap before packaged in a sturdt shipping box. All orders, even those shipped by US Media Mail, will be given a USPS tracking number which will be sent to the buyer so they will know when to expect arrival. Please let us know if there is a book with incorrect or missing photos. We recently moved the inventory to Biblio and a title or two may have had issues with the photos being transferred over.

Yesterday's Book shop is owned and operated by a disabled veteran. Due to my limitations, I often have to rely on speech-to-text software to list the books. If the description has typos ("and pages" instead of "end pages", pace downs instead of pastedowns, guilt instead of gilt, etc,) PLEASE let me know so I can correct the listing. The software spells words by phonetics and can make errors that I may not catch.

There is a 30 day money back guarantee if the book arrives damaged or is not as described. Please contact us prior if you have any issues with your purchases and we will make sure you are taken care of.