Pulling Back To The Bigger Picture

In any given post, your blogger can either concentrate on a single detail, maybe just one word, in a particular work by Poul Anderson or can instead pull back to contemplate an entire series, then further back to consider that series in relation to its author's complete works. Every time I do this, I am bound to repeat a lot but maybe some different aspects are highlighted each time.

Anderson's three greatest series have got to be:

the Technic History;
the Time Patrol;
The King Of Ys (with Karen Anderson).

The common theme is history:

a long future history series, based partly on a theory of past historical cycles;
time travel to concretely realized historical periods;
historical fiction, although with an element of fantasy.

However, these three peaks tower above a mountain range and, as soon as I begin to list other prominent works, I do not want to leave any out:

three novels of different genres set B.C.;

eight Viking volumes, ranging from heroic fantasy to historical fiction;

three novels of different genres set in the fourteenth century;

three ways of getting sf into the historical past - time travel, aliens and immortality;

Wellsian time travel to the ultimate future in "Flight to Forever";

five novels and two short stories directly or indirectly linked by the inter-cosmic Old Phoenix Inn, with van Rijn from the Technic History visiting the inn in one of the short stories!;

three short stories and one long novel set in different periods of the Maurai future history and a further novel in which mutant time travelers visit past and future periods, including the period of the Maurai Federation;

three contemporary detective novels;

a single novel combining Heinleinian and Stapledonian future historical models and also readdressing the Frankenstein theme;

several other future history series;

many individual sf novels and shorter works;

informative non-fiction.