Archives of the Evangelical Lutheran Church in America is. Aside from their archival catalog and their archival bookshelf, digitized books you can download, there are great digital exhibits for you to peruse.
Those with Evangelical Lutheran Chicago ancestors will be interested in their Genealogy Guide for Chicago located at http://archive.elca.org/archives/chicagochurches/chicago.html . Categorized into Synods,Councils, Regions and Churches you can look at maps, vintage photographs and information about the various churches. This is a great resource; it would be fabulous for other religions to copy.
Other digital exhibits include, In the Face of the West Wind: Rural Churches in the Midwest; Images of Luther and It Didn't all Begin with Ordination (a look at women in the church's history).
One of the digitial publications they have is the periodical Lutheran Women's Work, with issues digitized from 1921-1954. According to the website this periodical contained, "...feature articles pertaining to missions, sections on home and foreign mission work and missionaries, a young woman's page, department bulletins, convention reports, and the monthly program for auxiliaries."
When searching this website don't forget to check out the drop down menus on the top gray toolbar. These links include information about the Archives and their resources, their holdings, bibliographies, links, and even genealogy information and how individual churches should preserve records. The archives does have some microfilm available for loan.