The Trolley to Yesterday
John Bellairs
Johnny Dixon and Professor Childermass discover a trolley which transports them back to Constantinople in 1453 as the Turks are invading the Byzantine Empire.

by Eric Flint and Charles E. Gannon (2017)
"Most of the Church's senior leaders have converged upon the city of Besancon in Burgundy, where Pope Urban's renegade papacy, now on the run from the Vatican's would-be usurper Borja, plans to offer an ecumenical olive branch to the other Christian denominations with which Rome has been at war. Fortunately, Urban has up-time help relying on Cardinal Protector Larry Mazzare's theological savvy, Sharon Nichol's medical skills, and a small contingent of the Hibernian Battalion on loan by Mike Stearns. Which is prudent as Borja's assassins and other killers are determined to stop him"--
John Bellairs
Johnny Dixon and Professor Childermass discover a trolley which transports them back to Constantinople in 1453 as the Turks are invading the Byzantine Empire.
Naomi J. Williams
"Reimagines the historical Lapérouse expedition, a voyage of exploration that left Brest in 1785 with two frigates, more than two hundred men, and overblown Enlightenment ideals and expectations, in a brave attempt to circumnavigate the globe for science and the glory of France"--Dust jacket flap.
E.D. Baker
Many years ago a slighted fairy placed a curse on a beautiful young princess--a curse that caused her and all her female descendants to turn into mean, ugly witches if they ever touched a flower after turning sixteen. Now, Princess Emma, who is about to turn sixteen herself, is determined to break the spell once and for all. Emma travels back in time to the day the curse was placed on her ancestor in the hope of preventing the curse from being cast. Unfortunately she isn't successful in her efforts, but she does learn how to break it. Armed with this knowledge, Emma returns to her own time full of hope. But disaster ensues and Emma is about to give up completely--until true love shows itself in the most unexpected place of all. With a bit of courage, a pinch of luck, and of course, a healthy dose of magic, Princess Emma charms her way through the third hilarious adventure in this series.
Scarlett Ryan Foster
Two young brothers discover a buried Viking dagger near their Michigan home and find themselves transported to tenth-century Norway, where they are forced to accompany Viking warriors as they search for their kidnapped children across Europe and into Africa.